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Finding the Fourth Proportional to 41.97, 58.20 and 40.86

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Solution

The fourth proportional to 41.97, 58.20 and 40.86 is: 56.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.97 : 58.20 = 40.86 : x
  2. Step 2: Convert to fraction form
    41.97/58.20 = 40.86/x
  3. Step 3: Cross multiply
    41.97x = 58.20 × 40.86
  4. Step 4: Simplify right side
    41.97x = 2,378.05
  5. Step 5: Solve for x
    x = 2,378.05/41.97
  6. Step 6: Final answer
    x = 56.66

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.