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Finding the Fourth Proportional to 265.90, 396.73 and 238.54

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Solution

The fourth proportional to 265.90, 396.73 and 238.54 is: 355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.90 : 396.73 = 238.54 : x
  2. Step 2: Convert to fraction form
    265.90/396.73 = 238.54/x
  3. Step 3: Cross multiply
    265.90x = 396.73 × 238.54
  4. Step 4: Simplify right side
    265.90x = 94,635.97
  5. Step 5: Solve for x
    x = 94,635.97/265.90
  6. Step 6: Final answer
    x = 355.91

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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.