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.
For instance, in the first trimester, a pregnant woman does not need any extra calories at all. In the second trimester, you should try for an additional 340 calories a day to support your baby's development. During your last trimester of pregnancy, an optimum caloric intake would be increase to the 450 calorie range. This would equate roughly to eating a serving of lowfat Greek yogurt (120 Calories), two pieces of whole wheat toast (150 calories), and about 25 almonds (173 Calories).