Well, as far as numbers go, yeah it's a good ratio. But it's people's lives.
I've always felt strongly that police need to be reformed, specifically training, salary, benefits, counseling. I think trying to come up with a "good" number isn't the point, I think we need to work on getting the number down, and getting other (positive) numbers up. This is all nonsense now of course, the police have been demonized to such a degree that social media is ablaze with idiots claiming anything with a cop is problematic (i.e. Into the Spider-Verse... Miles' dad is a cop, but they are black, so people are torn).