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Finding the Fourth Proportional to 40.18, 60.24 and 18.52

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Solution

The fourth proportional to 40.18, 60.24 and 18.52 is: 27.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.18 : 60.24 = 18.52 : x
  2. Step 2: Convert to fraction form
    40.18/60.24 = 18.52/x
  3. Step 3: Cross multiply
    40.18x = 60.24 × 18.52
  4. Step 4: Simplify right side
    40.18x = 1,115.49
  5. Step 5: Solve for x
    x = 1,115.49/40.18
  6. Step 6: Final answer
    x = 27.76

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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.