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Finding the Fourth Proportional to 662.80, 994.24 and 229.90

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Solution

The fourth proportional to 662.80, 994.24 and 229.90 is: 344.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.80 : 994.24 = 229.90 : x
  2. Step 2: Convert to fraction form
    662.80/994.24 = 229.90/x
  3. Step 3: Cross multiply
    662.80x = 994.24 × 229.90
  4. Step 4: Simplify right side
    662.80x = 228,575.78
  5. Step 5: Solve for x
    x = 228,575.78/662.80
  6. Step 6: Final answer
    x = 344.86

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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.