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Finding the Fourth Proportional to 542.69, 748.97 and 343.56

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Solution

The fourth proportional to 542.69, 748.97 and 343.56 is: 474.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.69 : 748.97 = 343.56 : x
  2. Step 2: Convert to fraction form
    542.69/748.97 = 343.56/x
  3. Step 3: Cross multiply
    542.69x = 748.97 × 343.56
  4. Step 4: Simplify right side
    542.69x = 257,314.42
  5. Step 5: Solve for x
    x = 257,314.42/542.69
  6. Step 6: Final answer
    x = 474.15

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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.