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Finding the Fourth Proportional to 76.29, 113.88 and 60.93

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Solution

The fourth proportional to 76.29, 113.88 and 60.93 is: 90.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.29 : 113.88 = 60.93 : x
  2. Step 2: Convert to fraction form
    76.29/113.88 = 60.93/x
  3. Step 3: Cross multiply
    76.29x = 113.88 × 60.93
  4. Step 4: Simplify right side
    76.29x = 6,938.71
  5. Step 5: Solve for x
    x = 6,938.71/76.29
  6. Step 6: Final answer
    x = 90.95

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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.