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Finding the Fourth Proportional to 237.21, 325.05 and 231.95

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Solution

The fourth proportional to 237.21, 325.05 and 231.95 is: 317.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.21 : 325.05 = 231.95 : x
  2. Step 2: Convert to fraction form
    237.21/325.05 = 231.95/x
  3. Step 3: Cross multiply
    237.21x = 325.05 × 231.95
  4. Step 4: Simplify right side
    237.21x = 75,393.72
  5. Step 5: Solve for x
    x = 75,393.72/237.21
  6. Step 6: Final answer
    x = 317.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.