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Finding the Fourth Proportional to 355.97, 533.36 and 124.73

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Solution

The fourth proportional to 355.97, 533.36 and 124.73 is: 186.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.97 : 533.36 = 124.73 : x
  2. Step 2: Convert to fraction form
    355.97/533.36 = 124.73/x
  3. Step 3: Cross multiply
    355.97x = 533.36 × 124.73
  4. Step 4: Simplify right side
    355.97x = 66,522.70
  5. Step 5: Solve for x
    x = 66,522.70/355.97
  6. Step 6: Final answer
    x = 186.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.