Question

9. Find x in each of the following proportions :
(0) 169 :x=x:1
(ii) 125 : * =*:5
Teher Signature
Mathematics - Part 6 - 16​

Answer 1

$169:x::x:1 \\ {x}^{2} = 169 \\ x = \sqrt{169} \\ x = 13$

$125:x::x:5 \\ {x}^{2} = 125 \times 5 \\ x = \sqrt{125 \times 5} \\ x = \sqrt{625} = 25$