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Finding the Fourth Proportional to 998.27, 1,496.04 and 449.17

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Solution

The fourth proportional to 998.27, 1,496.04 and 449.17 is: 673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.27 : 1,496.04 = 449.17 : x
  2. Step 2: Convert to fraction form
    998.27/1,496.04 = 449.17/x
  3. Step 3: Cross multiply
    998.27x = 1,496.04 × 449.17
  4. Step 4: Simplify right side
    998.27x = 671,978.86
  5. Step 5: Solve for x
    x = 671,978.86/998.27
  6. Step 6: Final answer
    x = 673.14

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Double scale
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Similar ratio
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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.