Find the mean proportional between 4 and 900.
60
Given Information:
Two numbers = 4, 900
Concept: The mean proportional between two numbers a and b is √(ab).
Solution:
⇒ Mean proportional = √(4 x 900) = 60
Therefore, the mean proportional between 4 and 900 is 60.
Important Questions from Mean Proportional
What number must be added to each of the numbers 15, 9 and 5 so that the resulting numbers may be in a continued proportion ?
When x is subtracted from each of 43, 38, 11 and 10, then the numbers so obtained in this order are in proportion. What is the mean proportional between (11x + 3) and (9x - 2) ?
If 22, x, 88 are in a continued proportion, find the value of x.
A. 24
B. 33
C. 44
D. 36
The arithmetic mean and geometric mean of two numbers are 7 and 2√10 respectively, then find the numbers.
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)?
