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Finding the Fourth Proportional to 358.80, 539.11 and 228.86

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Solution

The fourth proportional to 358.80, 539.11 and 228.86 is: 343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.80 : 539.11 = 228.86 : x
  2. Step 2: Convert to fraction form
    358.80/539.11 = 228.86/x
  3. Step 3: Cross multiply
    358.80x = 539.11 × 228.86
  4. Step 4: Simplify right side
    358.80x = 123,379.04
  5. Step 5: Solve for x
    x = 123,379.04/358.80
  6. Step 6: Final answer
    x = 343.87

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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.