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Finding the Fourth Proportional to 1,456.53, 2,183.42 and 725.41

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Solution

The fourth proportional to 1,456.53, 2,183.42 and 725.41 is: 1,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.53 : 2,183.42 = 725.41 : x
  2. Step 2: Convert to fraction form
    1,456.53/2,183.42 = 725.41/x
  3. Step 3: Cross multiply
    1,456.53x = 2,183.42 × 725.41
  4. Step 4: Simplify right side
    1,456.53x = 1,583,871.08
  5. Step 5: Solve for x
    x = 1,583,871.08/1,456.53
  6. Step 6: Final answer
    x = 1,087.43

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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.