Finding the Third Proportional to 424 and 624
Calculator
Solution
The third proportional to 424 and 624 is: 918.34
Step by Step Solution
- Step 1: Write the proportion equation
424 : 624 = 624 : x - Step 2: Convert to fraction form
424/624 = 624/x - Step 3: Cross multiply
424x = 624 × 624 - Step 4: Simplify right side
424x = 389,376 - Step 5: Solve for x
x = 389,376/424 - Step 6: Final answer
x = 918.34
Related Problems
Find third proportional to 212 and 312
Half scale
Find third proportional to 848 and 1,248
Double scale
Find third proportional to 426 and 627
Similar ratio
Find third proportional to 636 and 936
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.