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Finding the Fourth Proportional to 41, 61.17 and 40.68

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Solution

The fourth proportional to 41, 61.17 and 40.68 is: 60.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    41 : 61.17 = 40.68 : x
  2. Step 2: Convert to fraction form
    41/61.17 = 40.68/x
  3. Step 3: Cross multiply
    41x = 61.17 × 40.68
  4. Step 4: Simplify right side
    41x = 2,488.40
  5. Step 5: Solve for x
    x = 2,488.40/41
  6. Step 6: Final answer
    x = 60.69

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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.