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Finding the Fourth Proportional to 529.38, 794.88 and 519.66

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Solution

The fourth proportional to 529.38, 794.88 and 519.66 is: 780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.38 : 794.88 = 519.66 : x
  2. Step 2: Convert to fraction form
    529.38/794.88 = 519.66/x
  3. Step 3: Cross multiply
    529.38x = 794.88 × 519.66
  4. Step 4: Simplify right side
    529.38x = 413,067.34
  5. Step 5: Solve for x
    x = 413,067.34/529.38
  6. Step 6: Final answer
    x = 780.29

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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.