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Finding the Fourth Proportional to 251.22, 374.91 and 223.88

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Solution

The fourth proportional to 251.22, 374.91 and 223.88 is: 334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.22 : 374.91 = 223.88 : x
  2. Step 2: Convert to fraction form
    251.22/374.91 = 223.88/x
  3. Step 3: Cross multiply
    251.22x = 374.91 × 223.88
  4. Step 4: Simplify right side
    251.22x = 83,932.98
  5. Step 5: Solve for x
    x = 83,932.98/251.22
  6. Step 6: Final answer
    x = 334.10

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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.