Finding the Third Proportional to 515 and 547
Calculator
Solution
The third proportional to 515 and 547 is: 580.99
Step by Step Solution
- Step 1: Write the proportion equation
515 : 547 = 547 : x - Step 2: Convert to fraction form
515/547 = 547/x - Step 3: Cross multiply
515x = 547 × 547 - Step 4: Simplify right side
515x = 299,209 - Step 5: Solve for x
x = 299,209/515 - Step 6: Final answer
x = 580.99
Related Problems
Find third proportional to 257.50 and 273.50
Half scale
Find third proportional to 1,030 and 1,094
Double scale
Find third proportional to 517 and 549
Similar ratio
Find third proportional to 772.50 and 820.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.