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Finding the Fourth Proportional to 888.96, 1,227.05 and 516.03

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Solution

The fourth proportional to 888.96, 1,227.05 and 516.03 is: 712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.96 : 1,227.05 = 516.03 : x
  2. Step 2: Convert to fraction form
    888.96/1,227.05 = 516.03/x
  3. Step 3: Cross multiply
    888.96x = 1,227.05 × 516.03
  4. Step 4: Simplify right side
    888.96x = 633,192.03
  5. Step 5: Solve for x
    x = 633,192.03/888.96
  6. Step 6: Final answer
    x = 712.28

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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.