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Finding the Fourth Proportional to 358.80, 495.14 and 203.54

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Solution

The fourth proportional to 358.80, 495.14 and 203.54 is: 280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.80 : 495.14 = 203.54 : x
  2. Step 2: Convert to fraction form
    358.80/495.14 = 203.54/x
  3. Step 3: Cross multiply
    358.80x = 495.14 × 203.54
  4. Step 4: Simplify right side
    358.80x = 100,780.80
  5. Step 5: Solve for x
    x = 100,780.80/358.80
  6. Step 6: Final answer
    x = 280.88

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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.