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Finding the Fourth Proportional to 362.11, 542.95 and 118.61

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Solution

The fourth proportional to 362.11, 542.95 and 118.61 is: 177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.11 : 542.95 = 118.61 : x
  2. Step 2: Convert to fraction form
    362.11/542.95 = 118.61/x
  3. Step 3: Cross multiply
    362.11x = 542.95 × 118.61
  4. Step 4: Simplify right side
    362.11x = 64,399.30
  5. Step 5: Solve for x
    x = 64,399.30/362.11
  6. Step 6: Final answer
    x = 177.84

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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.