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Finding the Fourth Proportional to 519.30, 778.98 and 194.65

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Solution

The fourth proportional to 519.30, 778.98 and 194.65 is: 291.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.30 : 778.98 = 194.65 : x
  2. Step 2: Convert to fraction form
    519.30/778.98 = 194.65/x
  3. Step 3: Cross multiply
    519.30x = 778.98 × 194.65
  4. Step 4: Simplify right side
    519.30x = 151,627.24
  5. Step 5: Solve for x
    x = 151,627.24/519.30
  6. Step 6: Final answer
    x = 291.98

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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.