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Finding the Fourth Proportional to 136.39, 204.58 and 33.68

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Solution

The fourth proportional to 136.39, 204.58 and 33.68 is: 50.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.39 : 204.58 = 33.68 : x
  2. Step 2: Convert to fraction form
    136.39/204.58 = 33.68/x
  3. Step 3: Cross multiply
    136.39x = 204.58 × 33.68
  4. Step 4: Simplify right side
    136.39x = 6,889.83
  5. Step 5: Solve for x
    x = 6,889.83/136.39
  6. Step 6: Final answer
    x = 50.51

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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.