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Finding the Fourth Proportional to 225.91, 310.98 and 170.56

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Solution

The fourth proportional to 225.91, 310.98 and 170.56 is: 234.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.91 : 310.98 = 170.56 : x
  2. Step 2: Convert to fraction form
    225.91/310.98 = 170.56/x
  3. Step 3: Cross multiply
    225.91x = 310.98 × 170.56
  4. Step 4: Simplify right side
    225.91x = 53,040.75
  5. Step 5: Solve for x
    x = 53,040.75/225.91
  6. Step 6: Final answer
    x = 234.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.