Respuesta :

Answer:
20:45 is proportional to 4:9
9:27 is not proportional to 33:11

Explanation:
To find if two ratios are proportional you can write them as fractions and simplify them.

So 20/45 can be simplified to 4/9

20/5 = 4

45/5 = 9

20/45 = 4/9



9/27 cannot be simplified into 33/11

So it is not proportional