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Finding the Fourth Proportional to 249.32, 344.16 and 171.05

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Solution

The fourth proportional to 249.32, 344.16 and 171.05 is: 236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.32 : 344.16 = 171.05 : x
  2. Step 2: Convert to fraction form
    249.32/344.16 = 171.05/x
  3. Step 3: Cross multiply
    249.32x = 344.16 × 171.05
  4. Step 4: Simplify right side
    249.32x = 58,866.85
  5. Step 5: Solve for x
    x = 58,866.85/249.32
  6. Step 6: Final answer
    x = 236.11

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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.