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Finding the Fourth Proportional to 447.35, 671.07 and 122.72

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Solution

The fourth proportional to 447.35, 671.07 and 122.72 is: 184.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.35 : 671.07 = 122.72 : x
  2. Step 2: Convert to fraction form
    447.35/671.07 = 122.72/x
  3. Step 3: Cross multiply
    447.35x = 671.07 × 122.72
  4. Step 4: Simplify right side
    447.35x = 82,352.41
  5. Step 5: Solve for x
    x = 82,352.41/447.35
  6. Step 6: Final answer
    x = 184.09

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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.