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Finding the Fourth Proportional to 2,284.07, 3,425.49 and 640.71

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Solution

The fourth proportional to 2,284.07, 3,425.49 and 640.71 is: 960.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.07 : 3,425.49 = 640.71 : x
  2. Step 2: Convert to fraction form
    2,284.07/3,425.49 = 640.71/x
  3. Step 3: Cross multiply
    2,284.07x = 3,425.49 × 640.71
  4. Step 4: Simplify right side
    2,284.07x = 2,194,745.70
  5. Step 5: Solve for x
    x = 2,194,745.70/2,284.07
  6. Step 6: Final answer
    x = 960.89

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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.