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Finding the Fourth Proportional to 355.36, 532.85 and 191.02

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Solution

The fourth proportional to 355.36, 532.85 and 191.02 is: 286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.36 : 532.85 = 191.02 : x
  2. Step 2: Convert to fraction form
    355.36/532.85 = 191.02/x
  3. Step 3: Cross multiply
    355.36x = 532.85 × 191.02
  4. Step 4: Simplify right side
    355.36x = 101,785.97
  5. Step 5: Solve for x
    x = 101,785.97/355.36
  6. Step 6: Final answer
    x = 286.43

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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.