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Finding the Fourth Proportional to 268.82, 371.18 and 190.45

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Solution

The fourth proportional to 268.82, 371.18 and 190.45 is: 262.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.82 : 371.18 = 190.45 : x
  2. Step 2: Convert to fraction form
    268.82/371.18 = 190.45/x
  3. Step 3: Cross multiply
    268.82x = 371.18 × 190.45
  4. Step 4: Simplify right side
    268.82x = 70,692.17
  5. Step 5: Solve for x
    x = 70,692.17/268.82
  6. Step 6: Final answer
    x = 262.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.