1. of, involving, or being in proportion. 2. (Mathematics) maths having or related by a constant ratio. n. (Mathematics) maths an unknown term in a proportion: in a/b = c/x, x is the fourth proportional.
Recommended daily calorie intakes in the US are 2,700 for men and 2,200 for women. Eating a big breakfast could help with weight reduction and maintenance. When food is eaten may matter as much as what and how many calories are eaten.
As many as you want. Generally, people need about 2000 calories a day. Don't obsess over calorie counts, because it isn't very important to eat the right number of calories as much as it is to eat fruit, veggies, and to cut back on sugar and carbs.