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Finding the Fourth Proportional to 2,960.64, 4,440.89 and 769.39

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Solution

The fourth proportional to 2,960.64, 4,440.89 and 769.39 is: 1,154.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.64 : 4,440.89 = 769.39 : x
  2. Step 2: Convert to fraction form
    2,960.64/4,440.89 = 769.39/x
  3. Step 3: Cross multiply
    2,960.64x = 4,440.89 × 769.39
  4. Step 4: Simplify right side
    2,960.64x = 3,416,767.18
  5. Step 5: Solve for x
    x = 3,416,767.18/2,960.64
  6. Step 6: Final answer
    x = 1,154.06

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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.