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Finding the Fourth Proportional to 520.11, 717.17 and 323.37

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Solution

The fourth proportional to 520.11, 717.17 and 323.37 is: 445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.11 : 717.17 = 323.37 : x
  2. Step 2: Convert to fraction form
    520.11/717.17 = 323.37/x
  3. Step 3: Cross multiply
    520.11x = 717.17 × 323.37
  4. Step 4: Simplify right side
    520.11x = 231,909.65
  5. Step 5: Solve for x
    x = 231,909.65/520.11
  6. Step 6: Final answer
    x = 445.89

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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.