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Finding the Fourth Proportional to 151.55, 226.23 and 140.28

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Solution

The fourth proportional to 151.55, 226.23 and 140.28 is: 209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.55 : 226.23 = 140.28 : x
  2. Step 2: Convert to fraction form
    151.55/226.23 = 140.28/x
  3. Step 3: Cross multiply
    151.55x = 226.23 × 140.28
  4. Step 4: Simplify right side
    151.55x = 31,735.54
  5. Step 5: Solve for x
    x = 31,735.54/151.55
  6. Step 6: Final answer
    x = 209.41

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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.