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Finding the Fourth Proportional to 838.54, 1,252.72 and 726.94

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Solution

The fourth proportional to 838.54, 1,252.72 and 726.94 is: 1,086.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    838.54 : 1,252.72 = 726.94 : x
  2. Step 2: Convert to fraction form
    838.54/1,252.72 = 726.94/x
  3. Step 3: Cross multiply
    838.54x = 1,252.72 × 726.94
  4. Step 4: Simplify right side
    838.54x = 910,652.28
  5. Step 5: Solve for x
    x = 910,652.28/838.54
  6. Step 6: Final answer
    x = 1,086.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.