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Finding the Fourth Proportional to 88.41, 133.17 and 76.35

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Solution

The fourth proportional to 88.41, 133.17 and 76.35 is: 115.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.41 : 133.17 = 76.35 : x
  2. Step 2: Convert to fraction form
    88.41/133.17 = 76.35/x
  3. Step 3: Cross multiply
    88.41x = 133.17 × 76.35
  4. Step 4: Simplify right side
    88.41x = 10,167.53
  5. Step 5: Solve for x
    x = 10,167.53/88.41
  6. Step 6: Final answer
    x = 115.00

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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.