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Finding the Fourth Proportional to 237.95, 354.97 and 221.38

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Solution

The fourth proportional to 237.95, 354.97 and 221.38 is: 330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.95 : 354.97 = 221.38 : x
  2. Step 2: Convert to fraction form
    237.95/354.97 = 221.38/x
  3. Step 3: Cross multiply
    237.95x = 354.97 × 221.38
  4. Step 4: Simplify right side
    237.95x = 78,581.48
  5. Step 5: Solve for x
    x = 78,581.48/237.95
  6. Step 6: Final answer
    x = 330.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.