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Finding the Fourth Proportional to 237.72, 327.98 and 139.41

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Solution

The fourth proportional to 237.72, 327.98 and 139.41 is: 192.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.72 : 327.98 = 139.41 : x
  2. Step 2: Convert to fraction form
    237.72/327.98 = 139.41/x
  3. Step 3: Cross multiply
    237.72x = 327.98 × 139.41
  4. Step 4: Simplify right side
    237.72x = 45,723.69
  5. Step 5: Solve for x
    x = 45,723.69/237.72
  6. Step 6: Final answer
    x = 192.34

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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.