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Finding the Fourth Proportional to 447.47, 670.33 and 308.32

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Solution

The fourth proportional to 447.47, 670.33 and 308.32 is: 461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.47 : 670.33 = 308.32 : x
  2. Step 2: Convert to fraction form
    447.47/670.33 = 308.32/x
  3. Step 3: Cross multiply
    447.47x = 670.33 × 308.32
  4. Step 4: Simplify right side
    447.47x = 206,678.14
  5. Step 5: Solve for x
    x = 206,678.14/447.47
  6. Step 6: Final answer
    x = 461.88

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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.