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Finding the Fourth Proportional to 41.33, 61.68 and 38.65

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Solution

The fourth proportional to 41.33, 61.68 and 38.65 is: 57.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.33 : 61.68 = 38.65 : x
  2. Step 2: Convert to fraction form
    41.33/61.68 = 38.65/x
  3. Step 3: Cross multiply
    41.33x = 61.68 × 38.65
  4. Step 4: Simplify right side
    41.33x = 2,384.15
  5. Step 5: Solve for x
    x = 2,384.15/41.33
  6. Step 6: Final answer
    x = 57.69

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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.