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Finding the Fourth Proportional to 151.26, 226.41 and 139.38

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Solution

The fourth proportional to 151.26, 226.41 and 139.38 is: 208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.26 : 226.41 = 139.38 : x
  2. Step 2: Convert to fraction form
    151.26/226.41 = 139.38/x
  3. Step 3: Cross multiply
    151.26x = 226.41 × 139.38
  4. Step 4: Simplify right side
    151.26x = 31,557.03
  5. Step 5: Solve for x
    x = 31,557.03/151.26
  6. Step 6: Final answer
    x = 208.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.