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Finding the Fourth Proportional to 153.44, 231.11 and 136.52

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Solution

The fourth proportional to 153.44, 231.11 and 136.52 is: 205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.44 : 231.11 = 136.52 : x
  2. Step 2: Convert to fraction form
    153.44/231.11 = 136.52/x
  3. Step 3: Cross multiply
    153.44x = 231.11 × 136.52
  4. Step 4: Simplify right side
    153.44x = 31,551.14
  5. Step 5: Solve for x
    x = 31,551.14/153.44
  6. Step 6: Final answer
    x = 205.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.