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Finding the Fourth Proportional to 152.12, 226.90 and 131.96

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Solution

The fourth proportional to 152.12, 226.90 and 131.96 is: 196.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.12 : 226.90 = 131.96 : x
  2. Step 2: Convert to fraction form
    152.12/226.90 = 131.96/x
  3. Step 3: Cross multiply
    152.12x = 226.90 × 131.96
  4. Step 4: Simplify right side
    152.12x = 29,941.72
  5. Step 5: Solve for x
    x = 29,941.72/152.12
  6. Step 6: Final answer
    x = 196.83

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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.