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Finding the Fourth Proportional to 658.60, 988.07 and 196.36

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Solution

The fourth proportional to 658.60, 988.07 and 196.36 is: 294.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.60 : 988.07 = 196.36 : x
  2. Step 2: Convert to fraction form
    658.60/988.07 = 196.36/x
  3. Step 3: Cross multiply
    658.60x = 988.07 × 196.36
  4. Step 4: Simplify right side
    658.60x = 194,013.97
  5. Step 5: Solve for x
    x = 194,013.97/658.60
  6. Step 6: Final answer
    x = 294.59

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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.