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Finding the Fourth Proportional to 1,295.92, 1,787.63 and 798.46

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Solution

The fourth proportional to 1,295.92, 1,787.63 and 798.46 is: 1,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.92 : 1,787.63 = 798.46 : x
  2. Step 2: Convert to fraction form
    1,295.92/1,787.63 = 798.46/x
  3. Step 3: Cross multiply
    1,295.92x = 1,787.63 × 798.46
  4. Step 4: Simplify right side
    1,295.92x = 1,427,347.06
  5. Step 5: Solve for x
    x = 1,427,347.06/1,295.92
  6. Step 6: Final answer
    x = 1,101.42

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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.