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Finding the Fourth Proportional to 796.74, 1,099.49 and 447.43

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Solution

The fourth proportional to 796.74, 1,099.49 and 447.43 is: 617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.74 : 1,099.49 = 447.43 : x
  2. Step 2: Convert to fraction form
    796.74/1,099.49 = 447.43/x
  3. Step 3: Cross multiply
    796.74x = 1,099.49 × 447.43
  4. Step 4: Simplify right side
    796.74x = 491,939.82
  5. Step 5: Solve for x
    x = 491,939.82/796.74
  6. Step 6: Final answer
    x = 617.44

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1.5x scale

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.