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Finding the Fourth Proportional to 142.89, 197.15 and 96.33

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Solution

The fourth proportional to 142.89, 197.15 and 96.33 is: 132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.89 : 197.15 = 96.33 : x
  2. Step 2: Convert to fraction form
    142.89/197.15 = 96.33/x
  3. Step 3: Cross multiply
    142.89x = 197.15 × 96.33
  4. Step 4: Simplify right side
    142.89x = 18,990.98
  5. Step 5: Solve for x
    x = 18,990.98/142.89
  6. Step 6: Final answer
    x = 132.91

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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.