Finding the Third Proportional to 351.50 and 415
Calculator
Solution
The third proportional to 351.50 and 415 is: 489.97
Step by Step Solution
- Step 1: Write the proportion equation
351.50 : 415 = 415 : x - Step 2: Convert to fraction form
351.50/415 = 415/x - Step 3: Cross multiply
351.50x = 415 × 415 - Step 4: Simplify right side
351.50x = 172,225 - Step 5: Solve for x
x = 172,225/351.50 - Step 6: Final answer
x = 489.97
Related Problems
Find third proportional to 175.75 and 207.50
Half scale
Find third proportional to 703 and 830
Double scale
Find third proportional to 354 and 417
Similar ratio
Find third proportional to 527.25 and 622.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.