If 35 is the mean proportion of 25 and x, then what is the value of x?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 49.
The mean proportion between two numbers a and b is the square root of their product, i.e.,
Mean Proportion = √ab
Here, a = 25, and mean proportion = 35
Let b = x
So,
⇒ 35 = √25x
⇒ 352 = 25x
⇒ x = 1225/25
⇒ x = 49
So, b = 49