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Finding the Fourth Proportional to 517.73, 774.99 and 443.92

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Solution

The fourth proportional to 517.73, 774.99 and 443.92 is: 664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.73 : 774.99 = 443.92 : x
  2. Step 2: Convert to fraction form
    517.73/774.99 = 443.92/x
  3. Step 3: Cross multiply
    517.73x = 774.99 × 443.92
  4. Step 4: Simplify right side
    517.73x = 344,029.69
  5. Step 5: Solve for x
    x = 344,029.69/517.73
  6. Step 6: Final answer
    x = 664.50

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Double scale
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Similar ratio
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1.5x scale

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.