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Finding the Third Proportional to 368.25 and 692.63

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Solution

The third proportional to 368.25 and 692.63 is: 1,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.25 : 692.63 = 692.63 : x
  2. Step 2: Convert to fraction form
    368.25/692.63 = 692.63/x
  3. Step 3: Cross multiply
    368.25x = 692.63 × 692.63
  4. Step 4: Simplify right side
    368.25x = 479,729.39
  5. Step 5: Solve for x
    x = 479,729.39/368.25
  6. Step 6: Final answer
    x = 1,302.73

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.