Finding the Third Proportional to 499 and 648
Calculator
Solution
The third proportional to 499 and 648 is: 841.49
Step by Step Solution
- Step 1: Write the proportion equation
499 : 648 = 648 : x - Step 2: Convert to fraction form
499/648 = 648/x - Step 3: Cross multiply
499x = 648 × 648 - Step 4: Simplify right side
499x = 419,904 - Step 5: Solve for x
x = 419,904/499 - Step 6: Final answer
x = 841.49
Related Problems
Find third proportional to 249.50 and 324
Half scale
Find third proportional to 998 and 1,296
Double scale
Find third proportional to 501 and 651
Similar ratio
Find third proportional to 748.50 and 972
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.