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Finding the Fourth Proportional to 447.97, 672.56 and 433.39

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Solution

The fourth proportional to 447.97, 672.56 and 433.39 is: 650.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.97 : 672.56 = 433.39 : x
  2. Step 2: Convert to fraction form
    447.97/672.56 = 433.39/x
  3. Step 3: Cross multiply
    447.97x = 672.56 × 433.39
  4. Step 4: Simplify right side
    447.97x = 291,480.78
  5. Step 5: Solve for x
    x = 291,480.78/447.97
  6. Step 6: Final answer
    x = 650.67

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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.