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Finding the Fourth Proportional to 551.02, 827.82 and 519.88

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Solution

The fourth proportional to 551.02, 827.82 and 519.88 is: 781.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.02 : 827.82 = 519.88 : x
  2. Step 2: Convert to fraction form
    551.02/827.82 = 519.88/x
  3. Step 3: Cross multiply
    551.02x = 827.82 × 519.88
  4. Step 4: Simplify right side
    551.02x = 430,364.46
  5. Step 5: Solve for x
    x = 430,364.46/551.02
  6. Step 6: Final answer
    x = 781.04

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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.