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Finding the Fourth Proportional to 1,763.11, 2,644.30 and 667.09

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Solution

The fourth proportional to 1,763.11, 2,644.30 and 667.09 is: 1,000.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.11 : 2,644.30 = 667.09 : x
  2. Step 2: Convert to fraction form
    1,763.11/2,644.30 = 667.09/x
  3. Step 3: Cross multiply
    1,763.11x = 2,644.30 × 667.09
  4. Step 4: Simplify right side
    1,763.11x = 1,763,986.09
  5. Step 5: Solve for x
    x = 1,763,986.09/1,763.11
  6. Step 6: Final answer
    x = 1,000.50

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1.5x scale

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.