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Finding the Fourth Proportional to 251.20, 344.45 and 242.52

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Solution

The fourth proportional to 251.20, 344.45 and 242.52 is: 332.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.20 : 344.45 = 242.52 : x
  2. Step 2: Convert to fraction form
    251.20/344.45 = 242.52/x
  3. Step 3: Cross multiply
    251.20x = 344.45 × 242.52
  4. Step 4: Simplify right side
    251.20x = 83,534.29
  5. Step 5: Solve for x
    x = 83,534.29/251.20
  6. Step 6: Final answer
    x = 332.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.