Question

Find the mean proportional between 9 and 64.
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Answer 1

Answer:

Step-by-step explanation:

Mean propotional=√9*√64

3*8

24

Answer 2

Answer:

27

Step-by-step explanation:

mean proportion of two numbers a,b is √ab [∵ If a:x::x:b are in proportion, then x is known as mean proportional]

Let  a =9 and b= 64 then 9: x :: x:64  where 'x' is the mean proportion.

∴x = √(9×64)  ⇒ x = √(27)^2 = 27