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Finding the Fourth Proportional to 251.70, 349.10 and 246.90

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Solution

The fourth proportional to 251.70, 349.10 and 246.90 is: 342.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.70 : 349.10 = 246.90 : x
  2. Step 2: Convert to fraction form
    251.70/349.10 = 246.90/x
  3. Step 3: Cross multiply
    251.70x = 349.10 × 246.90
  4. Step 4: Simplify right side
    251.70x = 86,191.56
  5. Step 5: Solve for x
    x = 86,191.56/251.70
  6. Step 6: Final answer
    x = 342.44

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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.