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Finding the Fourth Proportional to 1,485.75, 2,227.15 and 704.37

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Solution

The fourth proportional to 1,485.75, 2,227.15 and 704.37 is: 1,055.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.75 : 2,227.15 = 704.37 : x
  2. Step 2: Convert to fraction form
    1,485.75/2,227.15 = 704.37/x
  3. Step 3: Cross multiply
    1,485.75x = 2,227.15 × 704.37
  4. Step 4: Simplify right side
    1,485.75x = 1,568,737.65
  5. Step 5: Solve for x
    x = 1,568,737.65/1,485.75
  6. Step 6: Final answer
    x = 1,055.86

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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.