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Finding the Fourth Proportional to 911.26, 1,366.89 and 333.82

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Solution

The fourth proportional to 911.26, 1,366.89 and 333.82 is: 500.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.26 : 1,366.89 = 333.82 : x
  2. Step 2: Convert to fraction form
    911.26/1,366.89 = 333.82/x
  3. Step 3: Cross multiply
    911.26x = 1,366.89 × 333.82
  4. Step 4: Simplify right side
    911.26x = 456,295.22
  5. Step 5: Solve for x
    x = 456,295.22/911.26
  6. Step 6: Final answer
    x = 500.73

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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.