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Finding the Fourth Proportional to 237.40, 327.31 and 154.47

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Solution

The fourth proportional to 237.40, 327.31 and 154.47 is: 212.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.40 : 327.31 = 154.47 : x
  2. Step 2: Convert to fraction form
    237.40/327.31 = 154.47/x
  3. Step 3: Cross multiply
    237.40x = 327.31 × 154.47
  4. Step 4: Simplify right side
    237.40x = 50,559.19
  5. Step 5: Solve for x
    x = 50,559.19/237.40
  6. Step 6: Final answer
    x = 212.97

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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.