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Finding the Fourth Proportional to 148.19, 221.86 and 122.63

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Solution

The fourth proportional to 148.19, 221.86 and 122.63 is: 183.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.19 : 221.86 = 122.63 : x
  2. Step 2: Convert to fraction form
    148.19/221.86 = 122.63/x
  3. Step 3: Cross multiply
    148.19x = 221.86 × 122.63
  4. Step 4: Simplify right side
    148.19x = 27,205.28
  5. Step 5: Solve for x
    x = 27,205.28/148.19
  6. Step 6: Final answer
    x = 183.59

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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.