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Finding the Fourth Proportional to 519.23, 778.89 and 154.07

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Solution

The fourth proportional to 519.23, 778.89 and 154.07 is: 231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.23 : 778.89 = 154.07 : x
  2. Step 2: Convert to fraction form
    519.23/778.89 = 154.07/x
  3. Step 3: Cross multiply
    519.23x = 778.89 × 154.07
  4. Step 4: Simplify right side
    519.23x = 119,999.69
  5. Step 5: Solve for x
    x = 119,999.69/519.23
  6. Step 6: Final answer
    x = 231.11

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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.