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Finding the Fourth Proportional to 997.18, 1,495.95 and 449.62

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Solution

The fourth proportional to 997.18, 1,495.95 and 449.62 is: 674.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.18 : 1,495.95 = 449.62 : x
  2. Step 2: Convert to fraction form
    997.18/1,495.95 = 449.62/x
  3. Step 3: Cross multiply
    997.18x = 1,495.95 × 449.62
  4. Step 4: Simplify right side
    997.18x = 672,609.04
  5. Step 5: Solve for x
    x = 672,609.04/997.18
  6. Step 6: Final answer
    x = 674.51

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Double scale
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1.5x scale

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.