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Finding the Fourth Proportional to 149.23, 222.74 and 131.94

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Solution

The fourth proportional to 149.23, 222.74 and 131.94 is: 196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.23 : 222.74 = 131.94 : x
  2. Step 2: Convert to fraction form
    149.23/222.74 = 131.94/x
  3. Step 3: Cross multiply
    149.23x = 222.74 × 131.94
  4. Step 4: Simplify right side
    149.23x = 29,388.32
  5. Step 5: Solve for x
    x = 29,388.32/149.23
  6. Step 6: Final answer
    x = 196.93

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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.