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Finding the Fourth Proportional to 355.31, 532.82 and 170.18

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Solution

The fourth proportional to 355.31, 532.82 and 170.18 is: 255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.31 : 532.82 = 170.18 : x
  2. Step 2: Convert to fraction form
    355.31/532.82 = 170.18/x
  3. Step 3: Cross multiply
    355.31x = 532.82 × 170.18
  4. Step 4: Simplify right side
    355.31x = 90,671.79
  5. Step 5: Solve for x
    x = 90,671.79/355.31
  6. Step 6: Final answer
    x = 255.19

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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.