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Finding the Fourth Proportional to 358.20, 537.39 and 141.75

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Solution

The fourth proportional to 358.20, 537.39 and 141.75 is: 212.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.20 : 537.39 = 141.75 : x
  2. Step 2: Convert to fraction form
    358.20/537.39 = 141.75/x
  3. Step 3: Cross multiply
    358.20x = 537.39 × 141.75
  4. Step 4: Simplify right side
    358.20x = 76,175.03
  5. Step 5: Solve for x
    x = 76,175.03/358.20
  6. Step 6: Final answer
    x = 212.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.