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Finding the Fourth Proportional to 171.88, 259.09 and 169.45

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Solution

The fourth proportional to 171.88, 259.09 and 169.45 is: 255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.88 : 259.09 = 169.45 : x
  2. Step 2: Convert to fraction form
    171.88/259.09 = 169.45/x
  3. Step 3: Cross multiply
    171.88x = 259.09 × 169.45
  4. Step 4: Simplify right side
    171.88x = 43,901.73
  5. Step 5: Solve for x
    x = 43,901.73/171.88
  6. Step 6: Final answer
    x = 255.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.