Question

if the third proportional to 7 and x is 28 . find the value of x​

Answer 1

Answer:

Here it is given that the third proportional to 7 and x is 28

So by the given condition

7 : x = x : 28

\displaystyle \sf{ \implies \: \frac{7}{x} = \frac{x}{28} }

\displaystyle \sf{ \implies \: {x}^{2} = 7 \times 28}

\displaystyle \sf{ \implies \: {x}^{2} = 7 \times 7 \times 4}

\displaystyle \sf{ \implies \: x = \pm \: ( 7 \times 2)}

\displaystyle \sf{ \implies \: x = \pm \: 14}

FINAL ANSWER

So the required value

\boxed{ \sf{ \: \: x = \pm \: 14} \: \: }

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Answer 2

Answer:

Here is your answer

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