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Finding the Fourth Proportional to 542.22, 812.86 and 267.92

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Solution

The fourth proportional to 542.22, 812.86 and 267.92 is: 401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.22 : 812.86 = 267.92 : x
  2. Step 2: Convert to fraction form
    542.22/812.86 = 267.92/x
  3. Step 3: Cross multiply
    542.22x = 812.86 × 267.92
  4. Step 4: Simplify right side
    542.22x = 217,781.45
  5. Step 5: Solve for x
    x = 217,781.45/542.22
  6. Step 6: Final answer
    x = 401.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.