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Finding the Fourth Proportional to 2,959.69, 4,439.57 and 768.29

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Solution

The fourth proportional to 2,959.69, 4,439.57 and 768.29 is: 1,152.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.69 : 4,439.57 = 768.29 : x
  2. Step 2: Convert to fraction form
    2,959.69/4,439.57 = 768.29/x
  3. Step 3: Cross multiply
    2,959.69x = 4,439.57 × 768.29
  4. Step 4: Simplify right side
    2,959.69x = 3,410,877.24
  5. Step 5: Solve for x
    x = 3,410,877.24/2,959.69
  6. Step 6: Final answer
    x = 1,152.44

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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.