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Finding the Fourth Proportional to 148.25, 221.33 and 125.19

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Solution

The fourth proportional to 148.25, 221.33 and 125.19 is: 186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.25 : 221.33 = 125.19 : x
  2. Step 2: Convert to fraction form
    148.25/221.33 = 125.19/x
  3. Step 3: Cross multiply
    148.25x = 221.33 × 125.19
  4. Step 4: Simplify right side
    148.25x = 27,708.30
  5. Step 5: Solve for x
    x = 27,708.30/148.25
  6. Step 6: Final answer
    x = 186.90

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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.