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Finding the Fourth Proportional to 136.39, 203.05 and 135.58

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Solution

The fourth proportional to 136.39, 203.05 and 135.58 is: 201.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.39 : 203.05 = 135.58 : x
  2. Step 2: Convert to fraction form
    136.39/203.05 = 135.58/x
  3. Step 3: Cross multiply
    136.39x = 203.05 × 135.58
  4. Step 4: Simplify right side
    136.39x = 27,529.77
  5. Step 5: Solve for x
    x = 27,529.77/136.39
  6. Step 6: Final answer
    x = 201.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.