Formulas for ideal body weight are kind of meaningless applied to everyone. Some people are just heavier or lighter due to bone structure, body type, etc. When I was in college, I was about as thin as I will get without starving myself and my ratio according to that formula was 2.46. This is what I weighed after spending a summer hiking the Long Trail in Vermont, backpacking about 20 miles a day and carrying about 40 lbs. on my back. You could see my ribs. Yet, according to these formulas, I was overweight.