Question

Deandre is studying metals. He finds out that the ratio of chromium to nickel in stainless steel is 9 to 4.

Deandre adds 27 pounds of chromium and 12 pounds of nickel to his forge. Did he add the metals correctly
(is this a proportional relationship)? Show your work

Answer 1

Yes, this is a proportional relationship. If you divide 27/9 you get 3. If you divide 12/4 you get 3. Since they both equal 3, they are proportional.
9:4 27:12 27/9=3 12/4=3 3=3