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Finding the Fourth Proportional to 173.39, 240.86 and 171.72

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Solution

The fourth proportional to 173.39, 240.86 and 171.72 is: 238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.39 : 240.86 = 171.72 : x
  2. Step 2: Convert to fraction form
    173.39/240.86 = 171.72/x
  3. Step 3: Cross multiply
    173.39x = 240.86 × 171.72
  4. Step 4: Simplify right side
    173.39x = 41,359.62
  5. Step 5: Solve for x
    x = 41,359.62/173.39
  6. Step 6: Final answer
    x = 238.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.