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Finding the Fourth Proportional to 41.69, 62.89 and 40.28

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Solution

The fourth proportional to 41.69, 62.89 and 40.28 is: 60.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.69 : 62.89 = 40.28 : x
  2. Step 2: Convert to fraction form
    41.69/62.89 = 40.28/x
  3. Step 3: Cross multiply
    41.69x = 62.89 × 40.28
  4. Step 4: Simplify right side
    41.69x = 2,532.79
  5. Step 5: Solve for x
    x = 2,532.79/41.69
  6. Step 6: Final answer
    x = 60.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.