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Out of the 32 students in Mr. Martin's class, 18 are boys. If this ratio is proportional to the ratio of students in the school and the number of boys in the school, which of the following proportions would best be used to find the number of students in the school? It is given that there are 468 boys in the school.

18/32=s/468
32/18=s/468

468/32=s/18

32/s=18/468

1 answer

To set up a proportion based on the information given, we want to compare the ratio of boys to the total number of students in Mr. Martin's class to the ratio of boys to the total number of students in the school.

In Mr. Martin's class:

  • Number of boys = 18
  • Total number of students = 32

We can represent the total number of students in the school as \( s \). Given that there are 468 boys in the school, the proportion we want to form is:

\[ \frac{18}{32} = \frac{468}{s} \]

This corresponds to the first option provided:

18/32 = s/468

So, this is the correct proportion to find the number of students in the school.