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Finding the Fourth Proportional to 658.78, 989.08 and 334.37

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Solution

The fourth proportional to 658.78, 989.08 and 334.37 is: 502.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.78 : 989.08 = 334.37 : x
  2. Step 2: Convert to fraction form
    658.78/989.08 = 334.37/x
  3. Step 3: Cross multiply
    658.78x = 989.08 × 334.37
  4. Step 4: Simplify right side
    658.78x = 330,720.32
  5. Step 5: Solve for x
    x = 330,720.32/658.78
  6. Step 6: Final answer
    x = 502.02

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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.