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Finding the Fourth Proportional to 936.23, 1,292.04 and 605.43

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Solution

The fourth proportional to 936.23, 1,292.04 and 605.43 is: 835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.23 : 1,292.04 = 605.43 : x
  2. Step 2: Convert to fraction form
    936.23/1,292.04 = 605.43/x
  3. Step 3: Cross multiply
    936.23x = 1,292.04 × 605.43
  4. Step 4: Simplify right side
    936.23x = 782,239.78
  5. Step 5: Solve for x
    x = 782,239.78/936.23
  6. Step 6: Final answer
    x = 835.53

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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.