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Finding the Fourth Proportional to 223.88, 336.27 and 172.34

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Solution

The fourth proportional to 223.88, 336.27 and 172.34 is: 258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.88 : 336.27 = 172.34 : x
  2. Step 2: Convert to fraction form
    223.88/336.27 = 172.34/x
  3. Step 3: Cross multiply
    223.88x = 336.27 × 172.34
  4. Step 4: Simplify right side
    223.88x = 57,951.91
  5. Step 5: Solve for x
    x = 57,951.91/223.88
  6. Step 6: Final answer
    x = 258.86

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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.