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Finding the Fourth Proportional to 519.06, 778.04 and 210.79

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Solution

The fourth proportional to 519.06, 778.04 and 210.79 is: 315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.06 : 778.04 = 210.79 : x
  2. Step 2: Convert to fraction form
    519.06/778.04 = 210.79/x
  3. Step 3: Cross multiply
    519.06x = 778.04 × 210.79
  4. Step 4: Simplify right side
    519.06x = 164,003.05
  5. Step 5: Solve for x
    x = 164,003.05/519.06
  6. Step 6: Final answer
    x = 315.96

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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.