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Finding the Fourth Proportional to 519.36, 778.94 and 245.38

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Solution

The fourth proportional to 519.36, 778.94 and 245.38 is: 368.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.36 : 778.94 = 245.38 : x
  2. Step 2: Convert to fraction form
    519.36/778.94 = 245.38/x
  3. Step 3: Cross multiply
    519.36x = 778.94 × 245.38
  4. Step 4: Simplify right side
    519.36x = 191,136.30
  5. Step 5: Solve for x
    x = 191,136.30/519.36
  6. Step 6: Final answer
    x = 368.02

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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.