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Finding the Fourth Proportional to 401.27, 600.93 and 218.21

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Solution

The fourth proportional to 401.27, 600.93 and 218.21 is: 326.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.27 : 600.93 = 218.21 : x
  2. Step 2: Convert to fraction form
    401.27/600.93 = 218.21/x
  3. Step 3: Cross multiply
    401.27x = 600.93 × 218.21
  4. Step 4: Simplify right side
    401.27x = 131,125.93
  5. Step 5: Solve for x
    x = 131,125.93/401.27
  6. Step 6: Final answer
    x = 326.78

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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.