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Finding the Fourth Proportional to 237.40, 327.60 and 133.90

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Solution

The fourth proportional to 237.40, 327.60 and 133.90 is: 184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.40 : 327.60 = 133.90 : x
  2. Step 2: Convert to fraction form
    237.40/327.60 = 133.90/x
  3. Step 3: Cross multiply
    237.40x = 327.60 × 133.90
  4. Step 4: Simplify right side
    237.40x = 43,865.64
  5. Step 5: Solve for x
    x = 43,865.64/237.40
  6. Step 6: Final answer
    x = 184.78

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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.