proportional - one of the quantities in a mathematical proportion. quantity - the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable.
The third trimester is when women should eat around 500 extra calories per day. Special Considerations. While the 300 calorie per day example above is just an example, there are some special cases in which a woman might need to adjust her daily calorie intake to fit her needs.
During pregnancy, a woman's metabolism increases approximately 15 percent. The Institute of Medicine recommends that women consume an additional 340 calories per day during the second trimester and 452 calories above their normal energy needs each day during the third trimester.