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Finding the Fourth Proportional to 151.05, 226.43 and 69.80

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Solution

The fourth proportional to 151.05, 226.43 and 69.80 is: 104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.05 : 226.43 = 69.80 : x
  2. Step 2: Convert to fraction form
    151.05/226.43 = 69.80/x
  3. Step 3: Cross multiply
    151.05x = 226.43 × 69.80
  4. Step 4: Simplify right side
    151.05x = 15,804.81
  5. Step 5: Solve for x
    x = 15,804.81/151.05
  6. Step 6: Final answer
    x = 104.63

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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.