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Finding the Fourth Proportional to 151.73, 209.44 and 107.56

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Solution

The fourth proportional to 151.73, 209.44 and 107.56 is: 148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.73 : 209.44 = 107.56 : x
  2. Step 2: Convert to fraction form
    151.73/209.44 = 107.56/x
  3. Step 3: Cross multiply
    151.73x = 209.44 × 107.56
  4. Step 4: Simplify right side
    151.73x = 22,527.37
  5. Step 5: Solve for x
    x = 22,527.37/151.73
  6. Step 6: Final answer
    x = 148.47

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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.