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Finding the Fourth Proportional to 41.89, 62.45 and 38.65

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Solution

The fourth proportional to 41.89, 62.45 and 38.65 is: 57.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.89 : 62.45 = 38.65 : x
  2. Step 2: Convert to fraction form
    41.89/62.45 = 38.65/x
  3. Step 3: Cross multiply
    41.89x = 62.45 × 38.65
  4. Step 4: Simplify right side
    41.89x = 2,413.69
  5. Step 5: Solve for x
    x = 2,413.69/41.89
  6. Step 6: Final answer
    x = 57.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.