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Finding the Fourth Proportional to 223.86, 334.98 and 218.46

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Solution

The fourth proportional to 223.86, 334.98 and 218.46 is: 326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.86 : 334.98 = 218.46 : x
  2. Step 2: Convert to fraction form
    223.86/334.98 = 218.46/x
  3. Step 3: Cross multiply
    223.86x = 334.98 × 218.46
  4. Step 4: Simplify right side
    223.86x = 73,179.73
  5. Step 5: Solve for x
    x = 73,179.73/223.86
  6. Step 6: Final answer
    x = 326.90

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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.