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Finding the Fourth Proportional to 843.99, 1,266.11 and 227.72

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Solution

The fourth proportional to 843.99, 1,266.11 and 227.72 is: 341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.99 : 1,266.11 = 227.72 : x
  2. Step 2: Convert to fraction form
    843.99/1,266.11 = 227.72/x
  3. Step 3: Cross multiply
    843.99x = 1,266.11 × 227.72
  4. Step 4: Simplify right side
    843.99x = 288,311.10
  5. Step 5: Solve for x
    x = 288,311.10/843.99
  6. Step 6: Final answer
    x = 341.60

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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.