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Finding the Fourth Proportional to 1,448.87, 2,173.07 and 408.76

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Solution

The fourth proportional to 1,448.87, 2,173.07 and 408.76 is: 613.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.87 : 2,173.07 = 408.76 : x
  2. Step 2: Convert to fraction form
    1,448.87/2,173.07 = 408.76/x
  3. Step 3: Cross multiply
    1,448.87x = 2,173.07 × 408.76
  4. Step 4: Simplify right side
    1,448.87x = 888,259.68
  5. Step 5: Solve for x
    x = 888,259.68/1,448.87
  6. Step 6: Final answer
    x = 613.07

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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.