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Finding the Fourth Proportional to 151.12, 207.19 and 148.38

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Solution

The fourth proportional to 151.12, 207.19 and 148.38 is: 203.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.12 : 207.19 = 148.38 : x
  2. Step 2: Convert to fraction form
    151.12/207.19 = 148.38/x
  3. Step 3: Cross multiply
    151.12x = 207.19 × 148.38
  4. Step 4: Simplify right side
    151.12x = 30,742.85
  5. Step 5: Solve for x
    x = 30,742.85/151.12
  6. Step 6: Final answer
    x = 203.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.