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Finding the Fourth Proportional to 1,481.80, 2,224.09 and 751.89

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Solution

The fourth proportional to 1,481.80, 2,224.09 and 751.89 is: 1,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.80 : 2,224.09 = 751.89 : x
  2. Step 2: Convert to fraction form
    1,481.80/2,224.09 = 751.89/x
  3. Step 3: Cross multiply
    1,481.80x = 2,224.09 × 751.89
  4. Step 4: Simplify right side
    1,481.80x = 1,672,271.03
  5. Step 5: Solve for x
    x = 1,672,271.03/1,481.80
  6. Step 6: Final answer
    x = 1,128.54

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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.