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Finding the Fourth Proportional to 225.88, 339.24 and 171.64

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Solution

The fourth proportional to 225.88, 339.24 and 171.64 is: 257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.88 : 339.24 = 171.64 : x
  2. Step 2: Convert to fraction form
    225.88/339.24 = 171.64/x
  3. Step 3: Cross multiply
    225.88x = 339.24 × 171.64
  4. Step 4: Simplify right side
    225.88x = 58,227.15
  5. Step 5: Solve for x
    x = 58,227.15/225.88
  6. Step 6: Final answer
    x = 257.78

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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.