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Finding the Fourth Proportional to 519.64, 778.26 and 276.04

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Solution

The fourth proportional to 519.64, 778.26 and 276.04 is: 413.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.64 : 778.26 = 276.04 : x
  2. Step 2: Convert to fraction form
    519.64/778.26 = 276.04/x
  3. Step 3: Cross multiply
    519.64x = 778.26 × 276.04
  4. Step 4: Simplify right side
    519.64x = 214,830.89
  5. Step 5: Solve for x
    x = 214,830.89/519.64
  6. Step 6: Final answer
    x = 413.42

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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.