Question

Mean proportion of 1.2 and 0.3

Answer 1

Answer:

0.36

Step-by-step explanation:

1.2:x::0.3:x

x square =1.2*0.3

=0.36

Answer 2

The mean proportional of 1.2 and 0.3 is 0.6

Given :

The numbers 1.2 and 0.3

To find :

The mean proportional of 1.2 and 0.3

Solution :

Step 1 of 2 :

Form the equation

Let x be the mean proportional of 1.2 and 0.3

By the given condition

1.2 : x = x : 0.3

Step 2 of 2 :

Find the number

$\displaystyle \sf{1.2 : x = x : 0.3 }$

$\displaystyle \sf{ \implies \frac{1.2}{x} = \frac{x}{0.3} }$

$\displaystyle \sf{ \implies {x}^{2} = 1.2 \times 0.3}$

$\displaystyle \sf{ \implies {x}^{2} = 0.36}$

$\displaystyle \sf{ \implies x = \sqrt{ 0.36}}$

$\displaystyle \sf{ \implies x = 0.6}$

The mean proportional of 1.2 and 0.3 is 0.6