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Finding the Fourth Proportional to 890.39, 1,227.71 and 750.29

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Solution

The fourth proportional to 890.39, 1,227.71 and 750.29 is: 1,034.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.39 : 1,227.71 = 750.29 : x
  2. Step 2: Convert to fraction form
    890.39/1,227.71 = 750.29/x
  3. Step 3: Cross multiply
    890.39x = 1,227.71 × 750.29
  4. Step 4: Simplify right side
    890.39x = 921,138.54
  5. Step 5: Solve for x
    x = 921,138.54/890.39
  6. Step 6: Final answer
    x = 1,034.53

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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.