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Finding the Fourth Proportional to 41.81, 62.67 and 18.96

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Solution

The fourth proportional to 41.81, 62.67 and 18.96 is: 28.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.81 : 62.67 = 18.96 : x
  2. Step 2: Convert to fraction form
    41.81/62.67 = 18.96/x
  3. Step 3: Cross multiply
    41.81x = 62.67 × 18.96
  4. Step 4: Simplify right side
    41.81x = 1,188.22
  5. Step 5: Solve for x
    x = 1,188.22/41.81
  6. Step 6: Final answer
    x = 28.42

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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.