Finding the Third Proportional to 330 and 542
Calculator
Solution
The third proportional to 330 and 542 is: 890.19
Step by Step Solution
- Step 1: Write the proportion equation
330 : 542 = 542 : x - Step 2: Convert to fraction form
330/542 = 542/x - Step 3: Cross multiply
330x = 542 × 542 - Step 4: Simplify right side
330x = 293,764 - Step 5: Solve for x
x = 293,764/330 - Step 6: Final answer
x = 890.19
Related Problems
Find third proportional to 165 and 271
Half scale
Find third proportional to 660 and 1,084
Double scale
Find third proportional to 332 and 545
Similar ratio
Find third proportional to 495 and 813
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.