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Finding the Fourth Proportional to 62.61, 86.16 and 58.83

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Solution

The fourth proportional to 62.61, 86.16 and 58.83 is: 80.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.61 : 86.16 = 58.83 : x
  2. Step 2: Convert to fraction form
    62.61/86.16 = 58.83/x
  3. Step 3: Cross multiply
    62.61x = 86.16 × 58.83
  4. Step 4: Simplify right side
    62.61x = 5,068.79
  5. Step 5: Solve for x
    x = 5,068.79/62.61
  6. Step 6: Final answer
    x = 80.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.