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Finding the Fourth Proportional to 2,252.25, 3,378.88 and 692.42

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Solution

The fourth proportional to 2,252.25, 3,378.88 and 692.42 is: 1,038.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,252.25 : 3,378.88 = 692.42 : x
  2. Step 2: Convert to fraction form
    2,252.25/3,378.88 = 692.42/x
  3. Step 3: Cross multiply
    2,252.25x = 3,378.88 × 692.42
  4. Step 4: Simplify right side
    2,252.25x = 2,339,604.09
  5. Step 5: Solve for x
    x = 2,339,604.09/2,252.25
  6. Step 6: Final answer
    x = 1,038.79

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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.