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Finding the Fourth Proportional to 238.11, 328.52 and 149.55

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Solution

The fourth proportional to 238.11, 328.52 and 149.55 is: 206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.11 : 328.52 = 149.55 : x
  2. Step 2: Convert to fraction form
    238.11/328.52 = 149.55/x
  3. Step 3: Cross multiply
    238.11x = 328.52 × 149.55
  4. Step 4: Simplify right side
    238.11x = 49,129.42
  5. Step 5: Solve for x
    x = 49,129.42/238.11
  6. Step 6: Final answer
    x = 206.33

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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.