Question

find the mean proportional between 25 and 36​

Answer 1

Step-by-step explanation:

the mean proportion:

25:x::x:36

x^2=25×36

x^2=900

x=30

Answer 2

The mean proportional between 25 and 36​ is 30.

Step-by-step explanation:

To find : The mean proportional between 25 and 36​ ?

Solution :

If b is the mean proportion between a and c.

Then $a:b::b:c\Rightarrow \frac{a}{b}=\frac{b}{c}$

$\Rightarrow b^2=ac$

Let the mean proportion between 25 and 36 is x,

Here, a=25, b=x and c=36.

Substitute,

$x^2=25\times 26$

$x^2=900$

$x=\sqrt{900}$

$x=30$

Therefore, the mean proportional between 25 and 36​ is 30.

#Learn more

If 25, 35, x are in continued proportion, find the value of x?

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