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Finding the Fourth Proportional to 461.93, 693.11 and 218.41

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Solution

The fourth proportional to 461.93, 693.11 and 218.41 is: 327.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.93 : 693.11 = 218.41 : x
  2. Step 2: Convert to fraction form
    461.93/693.11 = 218.41/x
  3. Step 3: Cross multiply
    461.93x = 693.11 × 218.41
  4. Step 4: Simplify right side
    461.93x = 151,380.97
  5. Step 5: Solve for x
    x = 151,380.97/461.93
  6. Step 6: Final answer
    x = 327.72

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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.