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Finding the Fourth Proportional to 1,763.37, 2,644.45 and 668.05

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Solution

The fourth proportional to 1,763.37, 2,644.45 and 668.05 is: 1,001.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.37 : 2,644.45 = 668.05 : x
  2. Step 2: Convert to fraction form
    1,763.37/2,644.45 = 668.05/x
  3. Step 3: Cross multiply
    1,763.37x = 2,644.45 × 668.05
  4. Step 4: Simplify right side
    1,763.37x = 1,766,616.54
  5. Step 5: Solve for x
    x = 1,766,616.54/1,763.37
  6. Step 6: Final answer
    x = 1,001.84

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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.