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Finding the Fourth Proportional to 542.12, 813.27 and 176.90

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Solution

The fourth proportional to 542.12, 813.27 and 176.90 is: 265.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.12 : 813.27 = 176.90 : x
  2. Step 2: Convert to fraction form
    542.12/813.27 = 176.90/x
  3. Step 3: Cross multiply
    542.12x = 813.27 × 176.90
  4. Step 4: Simplify right side
    542.12x = 143,867.46
  5. Step 5: Solve for x
    x = 143,867.46/542.12
  6. Step 6: Final answer
    x = 265.38

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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.