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Finding the Fourth Proportional to 519.11, 717.66 and 514.55

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Solution

The fourth proportional to 519.11, 717.66 and 514.55 is: 711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.11 : 717.66 = 514.55 : x
  2. Step 2: Convert to fraction form
    519.11/717.66 = 514.55/x
  3. Step 3: Cross multiply
    519.11x = 717.66 × 514.55
  4. Step 4: Simplify right side
    519.11x = 369,273.75
  5. Step 5: Solve for x
    x = 369,273.75/519.11
  6. Step 6: Final answer
    x = 711.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.