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Finding the Fourth Proportional to 61.29, 92.32 and 54.95

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Solution

The fourth proportional to 61.29, 92.32 and 54.95 is: 82.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.29 : 92.32 = 54.95 : x
  2. Step 2: Convert to fraction form
    61.29/92.32 = 54.95/x
  3. Step 3: Cross multiply
    61.29x = 92.32 × 54.95
  4. Step 4: Simplify right side
    61.29x = 5,072.39
  5. Step 5: Solve for x
    x = 5,072.39/61.29
  6. Step 6: Final answer
    x = 82.76

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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.