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Finding the Fourth Proportional to 197.74, 273.05 and 148.53

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Solution

The fourth proportional to 197.74, 273.05 and 148.53 is: 205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.74 : 273.05 = 148.53 : x
  2. Step 2: Convert to fraction form
    197.74/273.05 = 148.53/x
  3. Step 3: Cross multiply
    197.74x = 273.05 × 148.53
  4. Step 4: Simplify right side
    197.74x = 40,556.12
  5. Step 5: Solve for x
    x = 40,556.12/197.74
  6. Step 6: Final answer
    x = 205.10

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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.