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Finding the Fourth Proportional to 889.29, 1,227.18 and 516.27

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Solution

The fourth proportional to 889.29, 1,227.18 and 516.27 is: 712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.29 : 1,227.18 = 516.27 : x
  2. Step 2: Convert to fraction form
    889.29/1,227.18 = 516.27/x
  3. Step 3: Cross multiply
    889.29x = 1,227.18 × 516.27
  4. Step 4: Simplify right side
    889.29x = 633,556.22
  5. Step 5: Solve for x
    x = 633,556.22/889.29
  6. Step 6: Final answer
    x = 712.43

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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.