Q:

Select the option that is related to the third term in the same way as the second term is related to the first term.
$$ {7\over {50}}:{9\over {82}}:: {13\over170}:?$$

• 1
  225
• 2
  $$ {15\over 226}$$
• 3
  $$ {15\over 225}$$
• 4
  $$ { 15\over 224}$$