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Finding the Fourth Proportional to 353.40, 529.56 and 170.61

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Solution

The fourth proportional to 353.40, 529.56 and 170.61 is: 255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.40 : 529.56 = 170.61 : x
  2. Step 2: Convert to fraction form
    353.40/529.56 = 170.61/x
  3. Step 3: Cross multiply
    353.40x = 529.56 × 170.61
  4. Step 4: Simplify right side
    353.40x = 90,348.23
  5. Step 5: Solve for x
    x = 90,348.23/353.40
  6. Step 6: Final answer
    x = 255.65

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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.