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Finding the Fourth Proportional to 251.75, 379.46 and 235.05

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Solution

The fourth proportional to 251.75, 379.46 and 235.05 is: 354.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.75 : 379.46 = 235.05 : x
  2. Step 2: Convert to fraction form
    251.75/379.46 = 235.05/x
  3. Step 3: Cross multiply
    251.75x = 379.46 × 235.05
  4. Step 4: Simplify right side
    251.75x = 89,190.90
  5. Step 5: Solve for x
    x = 89,190.90/251.75
  6. Step 6: Final answer
    x = 354.29

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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.