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Finding the Fourth Proportional to 408.80, 563.20 and 335.36

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Solution

The fourth proportional to 408.80, 563.20 and 335.36 is: 462.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.80 : 563.20 = 335.36 : x
  2. Step 2: Convert to fraction form
    408.80/563.20 = 335.36/x
  3. Step 3: Cross multiply
    408.80x = 563.20 × 335.36
  4. Step 4: Simplify right side
    408.80x = 188,874.75
  5. Step 5: Solve for x
    x = 188,874.75/408.80
  6. Step 6: Final answer
    x = 462.02

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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.