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Finding the Fourth Proportional to 244.28, 335.46 and 209.30

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Solution

The fourth proportional to 244.28, 335.46 and 209.30 is: 287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.28 : 335.46 = 209.30 : x
  2. Step 2: Convert to fraction form
    244.28/335.46 = 209.30/x
  3. Step 3: Cross multiply
    244.28x = 335.46 × 209.30
  4. Step 4: Simplify right side
    244.28x = 70,211.78
  5. Step 5: Solve for x
    x = 70,211.78/244.28
  6. Step 6: Final answer
    x = 287.42

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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.