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Finding the Fourth Proportional to 658.37, 987.37 and 196.11

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Solution

The fourth proportional to 658.37, 987.37 and 196.11 is: 294.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.37 : 987.37 = 196.11 : x
  2. Step 2: Convert to fraction form
    658.37/987.37 = 196.11/x
  3. Step 3: Cross multiply
    658.37x = 987.37 × 196.11
  4. Step 4: Simplify right side
    658.37x = 193,632.64
  5. Step 5: Solve for x
    x = 193,632.64/658.37
  6. Step 6: Final answer
    x = 294.11

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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.