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Finding the Fourth Proportional to 149.51, 206.04 and 107.97

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Solution

The fourth proportional to 149.51, 206.04 and 107.97 is: 148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.51 : 206.04 = 107.97 : x
  2. Step 2: Convert to fraction form
    149.51/206.04 = 107.97/x
  3. Step 3: Cross multiply
    149.51x = 206.04 × 107.97
  4. Step 4: Simplify right side
    149.51x = 22,245.77
  5. Step 5: Solve for x
    x = 22,245.77/149.51
  6. Step 6: Final answer
    x = 148.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.