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Finding the Fourth Proportional to 403.41, 604.83 and 220.89

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Solution

The fourth proportional to 403.41, 604.83 and 220.89 is: 331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.41 : 604.83 = 220.89 : x
  2. Step 2: Convert to fraction form
    403.41/604.83 = 220.89/x
  3. Step 3: Cross multiply
    403.41x = 604.83 × 220.89
  4. Step 4: Simplify right side
    403.41x = 133,600.90
  5. Step 5: Solve for x
    x = 133,600.90/403.41
  6. Step 6: Final answer
    x = 331.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.