Finding the Third Proportional to 683 and 991.50
Calculator
Solution
The third proportional to 683 and 991.50 is: 1,439.34
Step by Step Solution
- Step 1: Write the proportion equation
683 : 991.50 = 991.50 : x - Step 2: Convert to fraction form
683/991.50 = 991.50/x - Step 3: Cross multiply
683x = 991.50 × 991.50 - Step 4: Simplify right side
683x = 983,072.25 - Step 5: Solve for x
x = 983,072.25/683 - Step 6: Final answer
x = 1,439.34
Related Problems
Find third proportional to 341.50 and 495.75
Half scale
Find third proportional to 1,366 and 1,983
Double scale
Find third proportional to 685 and 994
Similar ratio
Find third proportional to 1,024.50 and 1,487.25
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.