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Finding the Fourth Proportional to 518.74, 778.49 and 244.91

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Solution

The fourth proportional to 518.74, 778.49 and 244.91 is: 367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.74 : 778.49 = 244.91 : x
  2. Step 2: Convert to fraction form
    518.74/778.49 = 244.91/x
  3. Step 3: Cross multiply
    518.74x = 778.49 × 244.91
  4. Step 4: Simplify right side
    518.74x = 190,659.99
  5. Step 5: Solve for x
    x = 190,659.99/518.74
  6. Step 6: Final answer
    x = 367.54

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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.