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Finding the Fourth Proportional to 555.54, 827.84 and 519.09

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Solution

The fourth proportional to 555.54, 827.84 and 519.09 is: 773.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.54 : 827.84 = 519.09 : x
  2. Step 2: Convert to fraction form
    555.54/827.84 = 519.09/x
  3. Step 3: Cross multiply
    555.54x = 827.84 × 519.09
  4. Step 4: Simplify right side
    555.54x = 429,720.87
  5. Step 5: Solve for x
    x = 429,720.87/555.54
  6. Step 6: Final answer
    x = 773.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.