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Finding the Fourth Proportional to 1,295.92, 1,789.35 and 854.44

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Solution

The fourth proportional to 1,295.92, 1,789.35 and 854.44 is: 1,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.92 : 1,789.35 = 854.44 : x
  2. Step 2: Convert to fraction form
    1,295.92/1,789.35 = 854.44/x
  3. Step 3: Cross multiply
    1,295.92x = 1,789.35 × 854.44
  4. Step 4: Simplify right side
    1,295.92x = 1,528,892.21
  5. Step 5: Solve for x
    x = 1,528,892.21/1,295.92
  6. Step 6: Final answer
    x = 1,179.77

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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.