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Finding the Fourth Proportional to 796.32, 1,098.92 and 447

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Solution

The fourth proportional to 796.32, 1,098.92 and 447 is: 616.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.32 : 1,098.92 = 447 : x
  2. Step 2: Convert to fraction form
    796.32/1,098.92 = 447/x
  3. Step 3: Cross multiply
    796.32x = 1,098.92 × 447
  4. Step 4: Simplify right side
    796.32x = 491,215.01
  5. Step 5: Solve for x
    x = 491,215.01/796.32
  6. Step 6: Final answer
    x = 616.86

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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.