Question
If 96 : y :: y : 6, find the positive value of y.
The correct answer is
24
Using proportion: 96 × 6 = y² → y = √576 = 24
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Important Questions from Mean Proportional
When x is subtracted from each of 24, 30, 36 and 46, the numbers so obtained in this order, are in proportion. What is the mean proportional between (2x + 3) and (3x + 2)?
What is the mean proportional of 40 and 90?
What is the mean proportional between 3 and 27?
The mean proportion of the two numbers is 9 and the third proportion is 243. What will be the average of those numbers?
The mean proportional between 35 and a certain number N is four times the mean proportional between 14 and 30. The number N is:
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