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Finding the Fourth Proportional to 542.66, 748.44 and 395.24

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Solution

The fourth proportional to 542.66, 748.44 and 395.24 is: 545.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.66 : 748.44 = 395.24 : x
  2. Step 2: Convert to fraction form
    542.66/748.44 = 395.24/x
  3. Step 3: Cross multiply
    542.66x = 748.44 × 395.24
  4. Step 4: Simplify right side
    542.66x = 295,809.68
  5. Step 5: Solve for x
    x = 295,809.68/542.66
  6. Step 6: Final answer
    x = 545.12

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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.