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Finding the Fourth Proportional to 447.52, 671.52 and 191.20

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Solution

The fourth proportional to 447.52, 671.52 and 191.20 is: 286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.52 : 671.52 = 191.20 : x
  2. Step 2: Convert to fraction form
    447.52/671.52 = 191.20/x
  3. Step 3: Cross multiply
    447.52x = 671.52 × 191.20
  4. Step 4: Simplify right side
    447.52x = 128,394.62
  5. Step 5: Solve for x
    x = 128,394.62/447.52
  6. Step 6: Final answer
    x = 286.90

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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.