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Finding the Fourth Proportional to 445.92, 615.42 and 335.21

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Solution

The fourth proportional to 445.92, 615.42 and 335.21 is: 462.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.92 : 615.42 = 335.21 : x
  2. Step 2: Convert to fraction form
    445.92/615.42 = 335.21/x
  3. Step 3: Cross multiply
    445.92x = 615.42 × 335.21
  4. Step 4: Simplify right side
    445.92x = 206,291.86
  5. Step 5: Solve for x
    x = 206,291.86/445.92
  6. Step 6: Final answer
    x = 462.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.