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Finding the Fourth Proportional to 42.87, 63.97 and 41.84

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Solution

The fourth proportional to 42.87, 63.97 and 41.84 is: 62.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.87 : 63.97 = 41.84 : x
  2. Step 2: Convert to fraction form
    42.87/63.97 = 41.84/x
  3. Step 3: Cross multiply
    42.87x = 63.97 × 41.84
  4. Step 4: Simplify right side
    42.87x = 2,676.74
  5. Step 5: Solve for x
    x = 2,676.74/42.87
  6. Step 6: Final answer
    x = 62.44

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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.