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Finding the Fourth Proportional to 148.35, 222.39 and 122.88

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Solution

The fourth proportional to 148.35, 222.39 and 122.88 is: 184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.35 : 222.39 = 122.88 : x
  2. Step 2: Convert to fraction form
    148.35/222.39 = 122.88/x
  3. Step 3: Cross multiply
    148.35x = 222.39 × 122.88
  4. Step 4: Simplify right side
    148.35x = 27,327.28
  5. Step 5: Solve for x
    x = 27,327.28/148.35
  6. Step 6: Final answer
    x = 184.21

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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.