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Finding the Fourth Proportional to 41.10, 61.27 and 40.31

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Solution

The fourth proportional to 41.10, 61.27 and 40.31 is: 60.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.10 : 61.27 = 40.31 : x
  2. Step 2: Convert to fraction form
    41.10/61.27 = 40.31/x
  3. Step 3: Cross multiply
    41.10x = 61.27 × 40.31
  4. Step 4: Simplify right side
    41.10x = 2,469.79
  5. Step 5: Solve for x
    x = 2,469.79/41.10
  6. Step 6: Final answer
    x = 60.09

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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.