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Finding the Fourth Proportional to 41.54, 57.57 and 40.82

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Solution

The fourth proportional to 41.54, 57.57 and 40.82 is: 56.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.54 : 57.57 = 40.82 : x
  2. Step 2: Convert to fraction form
    41.54/57.57 = 40.82/x
  3. Step 3: Cross multiply
    41.54x = 57.57 × 40.82
  4. Step 4: Simplify right side
    41.54x = 2,350.01
  5. Step 5: Solve for x
    x = 2,350.01/41.54
  6. Step 6: Final answer
    x = 56.57

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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.