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Finding the Fourth Proportional to 319.75, 441.28 and 181.75

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Solution

The fourth proportional to 319.75, 441.28 and 181.75 is: 250.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.75 : 441.28 = 181.75 : x
  2. Step 2: Convert to fraction form
    319.75/441.28 = 181.75/x
  3. Step 3: Cross multiply
    319.75x = 441.28 × 181.75
  4. Step 4: Simplify right side
    319.75x = 80,201.73
  5. Step 5: Solve for x
    x = 80,201.73/319.75
  6. Step 6: Final answer
    x = 250.83

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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.