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Finding the Fourth Proportional to 447.08, 667.69 and 355.88

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Solution

The fourth proportional to 447.08, 667.69 and 355.88 is: 531.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.08 : 667.69 = 355.88 : x
  2. Step 2: Convert to fraction form
    447.08/667.69 = 355.88/x
  3. Step 3: Cross multiply
    447.08x = 667.69 × 355.88
  4. Step 4: Simplify right side
    447.08x = 237,617.52
  5. Step 5: Solve for x
    x = 237,617.52/447.08
  6. Step 6: Final answer
    x = 531.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.