Math has never been my strong suite, I thought I'd see if someone could give me the right way to figure this out.

For a given shift, I have to check to see if there are enough people assigned based off a state mandated ratio of patient to staff. So for this example the ratio is 4:1. One staff member for each 4 patients.

Example:

1. I know how many patients are scheduled: 19
2. I know how many staff members are scheduled: 3
3) and I know the ratio is 4:1

So do I divide the staff members by the number of patients?:
3 / 19 = 0.15

This seems like the right way, but how do I compare the result 0.15 to my ratio and determine if it meets or exceeds the desired ratio?

Thanks
Kirk