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Finding the Fourth Proportional to 237.17, 326.70 and 197.75

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Solution

The fourth proportional to 237.17, 326.70 and 197.75 is: 272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.17 : 326.70 = 197.75 : x
  2. Step 2: Convert to fraction form
    237.17/326.70 = 197.75/x
  3. Step 3: Cross multiply
    237.17x = 326.70 × 197.75
  4. Step 4: Simplify right side
    237.17x = 64,603.94
  5. Step 5: Solve for x
    x = 64,603.94/237.17
  6. Step 6: Final answer
    x = 272.40

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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.