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Finding the Fourth Proportional to 153.98, 231.26 and 132.06

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Solution

The fourth proportional to 153.98, 231.26 and 132.06 is: 198.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.98 : 231.26 = 132.06 : x
  2. Step 2: Convert to fraction form
    153.98/231.26 = 132.06/x
  3. Step 3: Cross multiply
    153.98x = 231.26 × 132.06
  4. Step 4: Simplify right side
    153.98x = 30,539.54
  5. Step 5: Solve for x
    x = 30,539.54/153.98
  6. Step 6: Final answer
    x = 198.34

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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.