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Finding the Fourth Proportional to 88.73, 133.10 and 57.86

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Solution

The fourth proportional to 88.73, 133.10 and 57.86 is: 86.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.73 : 133.10 = 57.86 : x
  2. Step 2: Convert to fraction form
    88.73/133.10 = 57.86/x
  3. Step 3: Cross multiply
    88.73x = 133.10 × 57.86
  4. Step 4: Simplify right side
    88.73x = 7,701.72
  5. Step 5: Solve for x
    x = 7,701.72/88.73
  6. Step 6: Final answer
    x = 86.80

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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.