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Finding the Fourth Proportional to 937.21, 1,292.89 and 605.92

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Solution

The fourth proportional to 937.21, 1,292.89 and 605.92 is: 835.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.21 : 1,292.89 = 605.92 : x
  2. Step 2: Convert to fraction form
    937.21/1,292.89 = 605.92/x
  3. Step 3: Cross multiply
    937.21x = 1,292.89 × 605.92
  4. Step 4: Simplify right side
    937.21x = 783,381.65
  5. Step 5: Solve for x
    x = 783,381.65/937.21
  6. Step 6: Final answer
    x = 835.87

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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.