Question
Download Solution PDFIf the third proportional of 3x2 and 4xy is 48, then the positive value of y is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
First proportional = 3x2
Second proportional = 4xy
Third proportional = 48
Formula Used:
If a, b, and c are in continued proportion, then b2 = ac.
Here, a = 3x2, b = 4xy, and c = 48.
Calculation:
(4xy)2 = (3x2) × 48
⇒ 16x2y2 = 144x2
⇒ y2 = 144x2 / 16x2
⇒ y2 = 9
⇒ y = ±√9
⇒ y = ±3
We need the positive value of y.
∴ The positive value of y is 3.
Last updated on Jul 8, 2025
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