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Finding the Fourth Proportional to 2,250.13, 3,375.38 and 690.27

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Solution

The fourth proportional to 2,250.13, 3,375.38 and 690.27 is: 1,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,250.13 : 3,375.38 = 690.27 : x
  2. Step 2: Convert to fraction form
    2,250.13/3,375.38 = 690.27/x
  3. Step 3: Cross multiply
    2,250.13x = 3,375.38 × 690.27
  4. Step 4: Simplify right side
    2,250.13x = 2,329,923.55
  5. Step 5: Solve for x
    x = 2,329,923.55/2,250.13
  6. Step 6: Final answer
    x = 1,035.46

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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.