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Finding the Fourth Proportional to 658.88, 988.85 and 334.34

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Solution

The fourth proportional to 658.88, 988.85 and 334.34 is: 501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.88 : 988.85 = 334.34 : x
  2. Step 2: Convert to fraction form
    658.88/988.85 = 334.34/x
  3. Step 3: Cross multiply
    658.88x = 988.85 × 334.34
  4. Step 4: Simplify right side
    658.88x = 330,607.16
  5. Step 5: Solve for x
    x = 330,607.16/658.88
  6. Step 6: Final answer
    x = 501.78

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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.