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Finding the Fourth Proportional to 61.62, 92.22 and 41.28

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Solution

The fourth proportional to 61.62, 92.22 and 41.28 is: 61.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.62 : 92.22 = 41.28 : x
  2. Step 2: Convert to fraction form
    61.62/92.22 = 41.28/x
  3. Step 3: Cross multiply
    61.62x = 92.22 × 41.28
  4. Step 4: Simplify right side
    61.62x = 3,806.84
  5. Step 5: Solve for x
    x = 3,806.84/61.62
  6. Step 6: Final answer
    x = 61.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.