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Finding the Fourth Proportional to 519.17, 716.54 and 298.26

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Solution

The fourth proportional to 519.17, 716.54 and 298.26 is: 411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.17 : 716.54 = 298.26 : x
  2. Step 2: Convert to fraction form
    519.17/716.54 = 298.26/x
  3. Step 3: Cross multiply
    519.17x = 716.54 × 298.26
  4. Step 4: Simplify right side
    519.17x = 213,713.73
  5. Step 5: Solve for x
    x = 213,713.73/519.17
  6. Step 6: Final answer
    x = 411.65

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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.