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Finding the Fourth Proportional to 251.88, 348.30 and 230.12

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Solution

The fourth proportional to 251.88, 348.30 and 230.12 is: 318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.88 : 348.30 = 230.12 : x
  2. Step 2: Convert to fraction form
    251.88/348.30 = 230.12/x
  3. Step 3: Cross multiply
    251.88x = 348.30 × 230.12
  4. Step 4: Simplify right side
    251.88x = 80,150.80
  5. Step 5: Solve for x
    x = 80,150.80/251.88
  6. Step 6: Final answer
    x = 318.21

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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.