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.
1 The first trimester does not require any extra calories. 2  During the second trimester an additional 340 calories a day are recommended.  For the third trimester, the recommendation is 450 calories more a day than when not pregnant.