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Finding the Fourth Proportional to 519.27, 778.23 and 288.27

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Solution

The fourth proportional to 519.27, 778.23 and 288.27 is: 432.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.27 : 778.23 = 288.27 : x
  2. Step 2: Convert to fraction form
    519.27/778.23 = 288.27/x
  3. Step 3: Cross multiply
    519.27x = 778.23 × 288.27
  4. Step 4: Simplify right side
    519.27x = 224,340.36
  5. Step 5: Solve for x
    x = 224,340.36/519.27
  6. Step 6: Final answer
    x = 432.03

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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.