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Finding the Fourth Proportional to 997.56, 1,495.13 and 449.60

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Solution

The fourth proportional to 997.56, 1,495.13 and 449.60 is: 673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.56 : 1,495.13 = 449.60 : x
  2. Step 2: Convert to fraction form
    997.56/1,495.13 = 449.60/x
  3. Step 3: Cross multiply
    997.56x = 1,495.13 × 449.60
  4. Step 4: Simplify right side
    997.56x = 672,200.72
  5. Step 5: Solve for x
    x = 672,200.72/997.56
  6. Step 6: Final answer
    x = 673.84

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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.