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Finding the Fourth Proportional to 2,285.30, 3,427.47 and 641.94

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Solution

The fourth proportional to 2,285.30, 3,427.47 and 641.94 is: 962.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.30 : 3,427.47 = 641.94 : x
  2. Step 2: Convert to fraction form
    2,285.30/3,427.47 = 641.94/x
  3. Step 3: Cross multiply
    2,285.30x = 3,427.47 × 641.94
  4. Step 4: Simplify right side
    2,285.30x = 2,200,230.09
  5. Step 5: Solve for x
    x = 2,200,230.09/2,285.30
  6. Step 6: Final answer
    x = 962.78

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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.