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Finding the Fourth Proportional to 149.58, 223.49 and 131.05

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Solution

The fourth proportional to 149.58, 223.49 and 131.05 is: 195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.58 : 223.49 = 131.05 : x
  2. Step 2: Convert to fraction form
    149.58/223.49 = 131.05/x
  3. Step 3: Cross multiply
    149.58x = 223.49 × 131.05
  4. Step 4: Simplify right side
    149.58x = 29,288.36
  5. Step 5: Solve for x
    x = 29,288.36/149.58
  6. Step 6: Final answer
    x = 195.81

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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.