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Finding the Fourth Proportional to 447.93, 671.90 and 191.25

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Solution

The fourth proportional to 447.93, 671.90 and 191.25 is: 286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.93 : 671.90 = 191.25 : x
  2. Step 2: Convert to fraction form
    447.93/671.90 = 191.25/x
  3. Step 3: Cross multiply
    447.93x = 671.90 × 191.25
  4. Step 4: Simplify right side
    447.93x = 128,499.92
  5. Step 5: Solve for x
    x = 128,499.92/447.93
  6. Step 6: Final answer
    x = 286.88

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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.