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Finding the Fourth Proportional to 1,395.73, 2,093.60 and 663.09

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Solution

The fourth proportional to 1,395.73, 2,093.60 and 663.09 is: 994.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.73 : 2,093.60 = 663.09 : x
  2. Step 2: Convert to fraction form
    1,395.73/2,093.60 = 663.09/x
  3. Step 3: Cross multiply
    1,395.73x = 2,093.60 × 663.09
  4. Step 4: Simplify right side
    1,395.73x = 1,388,241.71
  5. Step 5: Solve for x
    x = 1,388,241.71/1,395.73
  6. Step 6: Final answer
    x = 994.63

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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.