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Finding the Fourth Proportional to 408.88, 615.58 and 332.56

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Solution

The fourth proportional to 408.88, 615.58 and 332.56 is: 500.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.88 : 615.58 = 332.56 : x
  2. Step 2: Convert to fraction form
    408.88/615.58 = 332.56/x
  3. Step 3: Cross multiply
    408.88x = 615.58 × 332.56
  4. Step 4: Simplify right side
    408.88x = 204,717.28
  5. Step 5: Solve for x
    x = 204,717.28/408.88
  6. Step 6: Final answer
    x = 500.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.