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Finding the Fourth Proportional to 1,896.58, 2,844.78 and 663.94

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Solution

The fourth proportional to 1,896.58, 2,844.78 and 663.94 is: 995.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.58 : 2,844.78 = 663.94 : x
  2. Step 2: Convert to fraction form
    1,896.58/2,844.78 = 663.94/x
  3. Step 3: Cross multiply
    1,896.58x = 2,844.78 × 663.94
  4. Step 4: Simplify right side
    1,896.58x = 1,888,763.23
  5. Step 5: Solve for x
    x = 1,888,763.23/1,896.58
  6. Step 6: Final answer
    x = 995.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.