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Finding the Fourth Proportional to 41.98, 62.60 and 40.39

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Solution

The fourth proportional to 41.98, 62.60 and 40.39 is: 60.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.98 : 62.60 = 40.39 : x
  2. Step 2: Convert to fraction form
    41.98/62.60 = 40.39/x
  3. Step 3: Cross multiply
    41.98x = 62.60 × 40.39
  4. Step 4: Simplify right side
    41.98x = 2,528.41
  5. Step 5: Solve for x
    x = 2,528.41/41.98
  6. Step 6: Final answer
    x = 60.23

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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.