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Finding the Fourth Proportional to 518.99, 778.52 and 337.55

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Solution

The fourth proportional to 518.99, 778.52 and 337.55 is: 506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.99 : 778.52 = 337.55 : x
  2. Step 2: Convert to fraction form
    518.99/778.52 = 337.55/x
  3. Step 3: Cross multiply
    518.99x = 778.52 × 337.55
  4. Step 4: Simplify right side
    518.99x = 262,786.38
  5. Step 5: Solve for x
    x = 262,786.38/518.99
  6. Step 6: Final answer
    x = 506.34

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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.