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Finding the Fourth Proportional to 663.08, 993.38 and 333.62

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Solution

The fourth proportional to 663.08, 993.38 and 333.62 is: 499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.08 : 993.38 = 333.62 : x
  2. Step 2: Convert to fraction form
    663.08/993.38 = 333.62/x
  3. Step 3: Cross multiply
    663.08x = 993.38 × 333.62
  4. Step 4: Simplify right side
    663.08x = 331,404.80
  5. Step 5: Solve for x
    x = 331,404.80/663.08
  6. Step 6: Final answer
    x = 499.80

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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.