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Finding the Fourth Proportional to 41.07, 61.18 and 40.18

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Solution

The fourth proportional to 41.07, 61.18 and 40.18 is: 59.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.07 : 61.18 = 40.18 : x
  2. Step 2: Convert to fraction form
    41.07/61.18 = 40.18/x
  3. Step 3: Cross multiply
    41.07x = 61.18 × 40.18
  4. Step 4: Simplify right side
    41.07x = 2,458.01
  5. Step 5: Solve for x
    x = 2,458.01/41.07
  6. Step 6: Final answer
    x = 59.85

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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.