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Finding the Fourth Proportional to 542.13, 813.15 and 176.91

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Solution

The fourth proportional to 542.13, 813.15 and 176.91 is: 265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.13 : 813.15 = 176.91 : x
  2. Step 2: Convert to fraction form
    542.13/813.15 = 176.91/x
  3. Step 3: Cross multiply
    542.13x = 813.15 × 176.91
  4. Step 4: Simplify right side
    542.13x = 143,850.30
  5. Step 5: Solve for x
    x = 143,850.30/542.13
  6. Step 6: Final answer
    x = 265.35

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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.