Finding the Third Proportional to 328 and 418
Calculator
Solution
The third proportional to 328 and 418 is: 532.70
Step by Step Solution
- Step 1: Write the proportion equation
328 : 418 = 418 : x - Step 2: Convert to fraction form
328/418 = 418/x - Step 3: Cross multiply
328x = 418 × 418 - Step 4: Simplify right side
328x = 174,724 - Step 5: Solve for x
x = 174,724/328 - Step 6: Final answer
x = 532.70
Related Problems
Find third proportional to 164 and 209
Half scale
Find third proportional to 656 and 836
Double scale
Find third proportional to 330 and 421
Similar ratio
Find third proportional to 492 and 627
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.