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Finding the Fourth Proportional to 62.22, 92.92 and 54.12

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Solution

The fourth proportional to 62.22, 92.92 and 54.12 is: 80.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.22 : 92.92 = 54.12 : x
  2. Step 2: Convert to fraction form
    62.22/92.92 = 54.12/x
  3. Step 3: Cross multiply
    62.22x = 92.92 × 54.12
  4. Step 4: Simplify right side
    62.22x = 5,028.83
  5. Step 5: Solve for x
    x = 5,028.83/62.22
  6. Step 6: Final answer
    x = 80.82

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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.