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Finding the Fourth Proportional to 447.90, 671.36 and 188.04

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Solution

The fourth proportional to 447.90, 671.36 and 188.04 is: 281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.90 : 671.36 = 188.04 : x
  2. Step 2: Convert to fraction form
    447.90/671.36 = 188.04/x
  3. Step 3: Cross multiply
    447.90x = 671.36 × 188.04
  4. Step 4: Simplify right side
    447.90x = 126,240.39
  5. Step 5: Solve for x
    x = 126,240.39/447.90
  6. Step 6: Final answer
    x = 281.85

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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.