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Finding the Fourth Proportional to 542.46, 748.40 and 356.06

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Solution

The fourth proportional to 542.46, 748.40 and 356.06 is: 491.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.46 : 748.40 = 356.06 : x
  2. Step 2: Convert to fraction form
    542.46/748.40 = 356.06/x
  3. Step 3: Cross multiply
    542.46x = 748.40 × 356.06
  4. Step 4: Simplify right side
    542.46x = 266,472.54
  5. Step 5: Solve for x
    x = 266,472.54/542.46
  6. Step 6: Final answer
    x = 491.23

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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.