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Finding the Fourth Proportional to 519.67, 716.43 and 377.74

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Solution

The fourth proportional to 519.67, 716.43 and 377.74 is: 520.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.67 : 716.43 = 377.74 : x
  2. Step 2: Convert to fraction form
    519.67/716.43 = 377.74/x
  3. Step 3: Cross multiply
    519.67x = 716.43 × 377.74
  4. Step 4: Simplify right side
    519.67x = 270,624.27
  5. Step 5: Solve for x
    x = 270,624.27/519.67
  6. Step 6: Final answer
    x = 520.76

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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.