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Finding the Fourth Proportional to 408.35, 562.98 and 329.58

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Solution

The fourth proportional to 408.35, 562.98 and 329.58 is: 454.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.35 : 562.98 = 329.58 : x
  2. Step 2: Convert to fraction form
    408.35/562.98 = 329.58/x
  3. Step 3: Cross multiply
    408.35x = 562.98 × 329.58
  4. Step 4: Simplify right side
    408.35x = 185,548.18
  5. Step 5: Solve for x
    x = 185,548.18/408.35
  6. Step 6: Final answer
    x = 454.38

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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.