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Finding the Fourth Proportional to 355.50, 532.90 and 170.08

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Solution

The fourth proportional to 355.50, 532.90 and 170.08 is: 254.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.50 : 532.90 = 170.08 : x
  2. Step 2: Convert to fraction form
    355.50/532.90 = 170.08/x
  3. Step 3: Cross multiply
    355.50x = 532.90 × 170.08
  4. Step 4: Simplify right side
    355.50x = 90,635.63
  5. Step 5: Solve for x
    x = 90,635.63/355.50
  6. Step 6: Final answer
    x = 254.95

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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.