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Finding the Fourth Proportional to 150.36, 225.69 and 69.22

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Solution

The fourth proportional to 150.36, 225.69 and 69.22 is: 103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.36 : 225.69 = 69.22 : x
  2. Step 2: Convert to fraction form
    150.36/225.69 = 69.22/x
  3. Step 3: Cross multiply
    150.36x = 225.69 × 69.22
  4. Step 4: Simplify right side
    150.36x = 15,622.26
  5. Step 5: Solve for x
    x = 15,622.26/150.36
  6. Step 6: Final answer
    x = 103.90

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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.