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Finding the Fourth Proportional to 2,329.85, 3,494.62 and 769.69

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Solution

The fourth proportional to 2,329.85, 3,494.62 and 769.69 is: 1,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.85 : 3,494.62 = 769.69 : x
  2. Step 2: Convert to fraction form
    2,329.85/3,494.62 = 769.69/x
  3. Step 3: Cross multiply
    2,329.85x = 3,494.62 × 769.69
  4. Step 4: Simplify right side
    2,329.85x = 2,689,774.07
  5. Step 5: Solve for x
    x = 2,689,774.07/2,329.85
  6. Step 6: Final answer
    x = 1,154.48

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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.