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If 3, 9, and 27 are in proportion, what is the fourth proportional?

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HPCL Engineer Civil 23 Dec 2023 Official Paper
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  1. 134
  2. 81
  3. 99
  4. 66

Answer (Detailed Solution Below)

Option 2 : 81
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More Fourth Proportional Questions

Q1.Find the fourth proportional to the numbers x + 6, 3x + 6, 8x, if x = 6.
Q2.The fourth proportional to 4, a and 16a is 81. What is the value of a?
Q3.Find the fourth proportional to 2, 6, 8.
Q4.Find the fourth proportion to 10, 12, and 15.  
Q5.Find the fourth proportion to 1.25, 5.75 and 3.5.
Q6.Find the ratio between the fourth proportional of 42, 56, 63 and the fourth proportional of 189, 273, and 153.
Q7.Find the fourth proportion of the following numbers: \(\frac{1}{3}\)rd of 27,\(\frac{4}{5}\)th of 30,\(\frac{3}{7}\)th of 35.
Q8.If 3, 9, and 27 are in proportion, what is the fourth proportional?
Q9.What is the fourth proportionate of 8, 16 and 24?
Q10.Find the fourth proportion of the numbers \(\frac{1}{3}\)rd of 15, \(\frac{4}{5}\)th of 25, \(\frac{3}{7}\)th of 35:

More Ratio and Proportion Questions

Q1.Find the ratio of 6400 : 800 = ?
Q2.Find the fourth proportional to the numbers x + 6, 3x + 6, 8x, if x = 6.
Q3.If a and b are numbers such that (a + b) ∶ (a - b) ∶ ab = 14 ∶ 4 ∶ 45, then (5a + 3b) ∶ (6a - 4.8b) is equal to:
Q4.Rs. 1050 are divided among P, Q and R. The share of P is \(\frac{2}{5}\) of the combined share of Q and R. What is P's share?
Q5.If A ∶ B = 5 ∶ 7 and B ∶ C = 6 ∶ 11, then A ∶ B ∶ C = ?
Q6.Zahir is as much younger to Jacob as he is older to Ramesh. If the total of the ages of Jacob and Ramesh is 48 years, then how old is Zahir?
Q7.If P/Q = 7 then (P+Q)/(P-Q) = ?
Q8.Three students A, B and C of a school receive cash prize in the ratio 3 : 4 : 5 in a competition. Then the school principal gives ₹4,000 to each student. As a result now the cash prize of A, B and C becomes in the ratio 5 : 6 : 7. How much did B get in the competition? 
Q9.If 2a = 3b, 4b = 5c, a : c = ?
Q10.The total amount of ₹ 49 is distributed among A, B and C. A receives ₹ 5 more than Band B receives ₹ 4 more than C. What is the ratio of their shares ?
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Q1.The number 84y021 is completely divisible by 11. Find the digit y?
Q2.Find the value of m? m का मान ज्ञात कीजिये? 5m ÷ 5-3 = 55
Q3.83 × 82 × 8-5 = ?
Q4.If Sin \(A=\frac{3}{5}\) then find value of Cos A? 
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Q6.200 - 96 ÷ 4 = ?
Q7.\(\sqrt{100}+\sqrt{49}=?\)
Q8.If x - y = 1, then what is the value of x3 - y3 - 3xy?
Q9.The Cube root of 0.000064 is _________.
Q10.What number shall come next in the series? 2, 1, 1/2, 1/4 ________.
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