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Finding the Fourth Proportional to 136.80, 204.75 and 133.74

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Solution

The fourth proportional to 136.80, 204.75 and 133.74 is: 200.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.80 : 204.75 = 133.74 : x
  2. Step 2: Convert to fraction form
    136.80/204.75 = 133.74/x
  3. Step 3: Cross multiply
    136.80x = 204.75 × 133.74
  4. Step 4: Simplify right side
    136.80x = 27,383.27
  5. Step 5: Solve for x
    x = 27,383.27/136.80
  6. Step 6: Final answer
    x = 200.17

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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.