Initialize NSArray with floats?

Is this a valid way to initalize an NSArray with float objects?

NSArray *fatArray = [NSArray arrayWithObjects:
                    [NSNumber numberWithFloat:6.9],
                    [NSNumber numberWithFloat:4.7],
                    [NSNumber numberWithFloat:6.6],
                    [NSNumber numberWithFloat:6.9],nil];

It works and it feels right, just wanted to make sure I was on the right track.

gary