Question

If the three terms 15, x and 135 are in proportion, then what is the value of x ?​

Answer 1

Answer:

15:x=x:135

15/x=x/135

x^2=135×15=15×9×15=15^2×3^2

x=15×3=45

Answer 2

Answer:

$\huge\bold\pink\star\underbrace\mathtt{\underline{\underline{ANSWER}}}$

ɢɪᴠᴇɴ:15,x,135 ᴀʀᴇ ɪɴ ᴩʀᴏᴩᴏʀᴛɪᴏɴ

⇒x15=135x

⇒x2=15×135

⇒x2=5×3×5×3×3×3

⇒x=5×5×3×3×3×3

∴x=5×3×3=45