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Finding the Fourth Proportional to 355.71, 490.97 and 237.88

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Solution

The fourth proportional to 355.71, 490.97 and 237.88 is: 328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.71 : 490.97 = 237.88 : x
  2. Step 2: Convert to fraction form
    355.71/490.97 = 237.88/x
  3. Step 3: Cross multiply
    355.71x = 490.97 × 237.88
  4. Step 4: Simplify right side
    355.71x = 116,791.94
  5. Step 5: Solve for x
    x = 116,791.94/355.71
  6. Step 6: Final answer
    x = 328.33

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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.