Finding the Third Proportional to 361 and 665
Calculator
Solution
The third proportional to 361 and 665 is: 1,225
Step by Step Solution
- Step 1: Write the proportion equation
361 : 665 = 665 : x - Step 2: Convert to fraction form
361/665 = 665/x - Step 3: Cross multiply
361x = 665 × 665 - Step 4: Simplify right side
361x = 442,225 - Step 5: Solve for x
x = 442,225/361 - Step 6: Final answer
x = 1,225
Related Problems
Find third proportional to 180.50 and 332.50
Half scale
Find third proportional to 722 and 1,330
Double scale
Find third proportional to 363 and 669
Similar ratio
Find third proportional to 541.50 and 997.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.