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Finding the Fourth Proportional to 148.62, 205.96 and 145.74

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Solution

The fourth proportional to 148.62, 205.96 and 145.74 is: 201.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.62 : 205.96 = 145.74 : x
  2. Step 2: Convert to fraction form
    148.62/205.96 = 145.74/x
  3. Step 3: Cross multiply
    148.62x = 205.96 × 145.74
  4. Step 4: Simplify right side
    148.62x = 30,016.61
  5. Step 5: Solve for x
    x = 30,016.61/148.62
  6. Step 6: Final answer
    x = 201.97

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.