Question

find third proportional of 15 and 30​

Answer 1

Answer:

60

Step-by-step explanation:

a=15

b=30

therefore x is third proportional of a and b

let the 3rd proportional be x

a=b:b=x

therefore,

x=b^2/a

let

x=(30)^2/15

x= (30×30)/15

x=900/15

x=60

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Answer 2

Given,

Given numbers are = 15,30

To find,

The third proportional of the given numbers.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Now,

If, three numbers a,b and c are proportional, then :

$\frac{a}{b} = \frac{b}{c}$

Let, the third proportional of the given numbers = x

According to the previously mentioned mathematical property of numbers in proportion, we can get :

$\frac{15}{30} = \frac{30}{x}$

$15 \times x = 30 \times 30$

$x = \frac{30 \times 30}{15}$

$x = 60$

(This value of x will be the third proportional of the given numbers. That's why this will be considered as the final result.)

Hence, the third proportional will be 60