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Finding the Fourth Proportional to 148.43, 204.73 and 107.12

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Solution

The fourth proportional to 148.43, 204.73 and 107.12 is: 147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.43 : 204.73 = 107.12 : x
  2. Step 2: Convert to fraction form
    148.43/204.73 = 107.12/x
  3. Step 3: Cross multiply
    148.43x = 204.73 × 107.12
  4. Step 4: Simplify right side
    148.43x = 21,930.92
  5. Step 5: Solve for x
    x = 21,930.92/148.43
  6. Step 6: Final answer
    x = 147.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.