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Finding the Fourth Proportional to 545.28, 750.28 and 542.24

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Solution

The fourth proportional to 545.28, 750.28 and 542.24 is: 746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.28 : 750.28 = 542.24 : x
  2. Step 2: Convert to fraction form
    545.28/750.28 = 542.24/x
  3. Step 3: Cross multiply
    545.28x = 750.28 × 542.24
  4. Step 4: Simplify right side
    545.28x = 406,831.83
  5. Step 5: Solve for x
    x = 406,831.83/545.28
  6. Step 6: Final answer
    x = 746.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.