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Finding the Fourth Proportional to 1,753.44, 2,629.84 and 779.36

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Solution

The fourth proportional to 1,753.44, 2,629.84 and 779.36 is: 1,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.44 : 2,629.84 = 779.36 : x
  2. Step 2: Convert to fraction form
    1,753.44/2,629.84 = 779.36/x
  3. Step 3: Cross multiply
    1,753.44x = 2,629.84 × 779.36
  4. Step 4: Simplify right side
    1,753.44x = 2,049,592.10
  5. Step 5: Solve for x
    x = 2,049,592.10/1,753.44
  6. Step 6: Final answer
    x = 1,168.90

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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.