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Finding the Fourth Proportional to 797, 1,099.92 and 447.71

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Solution

The fourth proportional to 797, 1,099.92 and 447.71 is: 617.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    797 : 1,099.92 = 447.71 : x
  2. Step 2: Convert to fraction form
    797/1,099.92 = 447.71/x
  3. Step 3: Cross multiply
    797x = 1,099.92 × 447.71
  4. Step 4: Simplify right side
    797x = 492,445.18
  5. Step 5: Solve for x
    x = 492,445.18/797
  6. Step 6: Final answer
    x = 617.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.