Finding the Third Proportional to 503 and 648
Calculator
Solution
The third proportional to 503 and 648 is: 834.80
Step by Step Solution
- Step 1: Write the proportion equation
503 : 648 = 648 : x - Step 2: Convert to fraction form
503/648 = 648/x - Step 3: Cross multiply
503x = 648 × 648 - Step 4: Simplify right side
503x = 419,904 - Step 5: Solve for x
x = 419,904/503 - Step 6: Final answer
x = 834.80
Related Problems
Find third proportional to 251.50 and 324
Half scale
Find third proportional to 1,006 and 1,296
Double scale
Find third proportional to 505 and 651
Similar ratio
Find third proportional to 754.50 and 972
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.