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Finding the Fourth Proportional to 223.98, 334.14 and 213.66

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Solution

The fourth proportional to 223.98, 334.14 and 213.66 is: 318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.98 : 334.14 = 213.66 : x
  2. Step 2: Convert to fraction form
    223.98/334.14 = 213.66/x
  3. Step 3: Cross multiply
    223.98x = 334.14 × 213.66
  4. Step 4: Simplify right side
    223.98x = 71,392.35
  5. Step 5: Solve for x
    x = 71,392.35/223.98
  6. Step 6: Final answer
    x = 318.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.