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Finding the Fourth Proportional to 362.22, 542.40 and 252.87

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Solution

The fourth proportional to 362.22, 542.40 and 252.87 is: 378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.22 : 542.40 = 252.87 : x
  2. Step 2: Convert to fraction form
    362.22/542.40 = 252.87/x
  3. Step 3: Cross multiply
    362.22x = 542.40 × 252.87
  4. Step 4: Simplify right side
    362.22x = 137,156.69
  5. Step 5: Solve for x
    x = 137,156.69/362.22
  6. Step 6: Final answer
    x = 378.66

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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.