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Finding the Fourth Proportional to 237.21, 327.30 and 143.91

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Solution

The fourth proportional to 237.21, 327.30 and 143.91 is: 198.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.21 : 327.30 = 143.91 : x
  2. Step 2: Convert to fraction form
    237.21/327.30 = 143.91/x
  3. Step 3: Cross multiply
    237.21x = 327.30 × 143.91
  4. Step 4: Simplify right side
    237.21x = 47,101.74
  5. Step 5: Solve for x
    x = 47,101.74/237.21
  6. Step 6: Final answer
    x = 198.57

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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.