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Finding the Fourth Proportional to 94.73, 142.68 and 88.38

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Solution

The fourth proportional to 94.73, 142.68 and 88.38 is: 133.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.73 : 142.68 = 88.38 : x
  2. Step 2: Convert to fraction form
    94.73/142.68 = 88.38/x
  3. Step 3: Cross multiply
    94.73x = 142.68 × 88.38
  4. Step 4: Simplify right side
    94.73x = 12,610.06
  5. Step 5: Solve for x
    x = 12,610.06/94.73
  6. Step 6: Final answer
    x = 133.12

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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.