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Finding the Fourth Proportional to 1,252.94, 1,729.78 and 833.87

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Solution

The fourth proportional to 1,252.94, 1,729.78 and 833.87 is: 1,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.94 : 1,729.78 = 833.87 : x
  2. Step 2: Convert to fraction form
    1,252.94/1,729.78 = 833.87/x
  3. Step 3: Cross multiply
    1,252.94x = 1,729.78 × 833.87
  4. Step 4: Simplify right side
    1,252.94x = 1,442,413.89
  5. Step 5: Solve for x
    x = 1,442,413.89/1,252.94
  6. Step 6: Final answer
    x = 1,151.22

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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.