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Finding the Fourth Proportional to 518.71, 778.44 and 244.99

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Solution

The fourth proportional to 518.71, 778.44 and 244.99 is: 367.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.71 : 778.44 = 244.99 : x
  2. Step 2: Convert to fraction form
    518.71/778.44 = 244.99/x
  3. Step 3: Cross multiply
    518.71x = 778.44 × 244.99
  4. Step 4: Simplify right side
    518.71x = 190,710.02
  5. Step 5: Solve for x
    x = 190,710.02/518.71
  6. Step 6: Final answer
    x = 367.66

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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.