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Finding the Fourth Proportional to 204.62, 306.86 and 136.51

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Solution

The fourth proportional to 204.62, 306.86 and 136.51 is: 204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.62 : 306.86 = 136.51 : x
  2. Step 2: Convert to fraction form
    204.62/306.86 = 136.51/x
  3. Step 3: Cross multiply
    204.62x = 306.86 × 136.51
  4. Step 4: Simplify right side
    204.62x = 41,888.01
  5. Step 5: Solve for x
    x = 41,888.01/204.62
  6. Step 6: Final answer
    x = 204.72

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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.