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Finding the Fourth Proportional to 353.12, 529.36 and 133.70

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Solution

The fourth proportional to 353.12, 529.36 and 133.70 is: 200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.12 : 529.36 = 133.70 : x
  2. Step 2: Convert to fraction form
    353.12/529.36 = 133.70/x
  3. Step 3: Cross multiply
    353.12x = 529.36 × 133.70
  4. Step 4: Simplify right side
    353.12x = 70,775.68
  5. Step 5: Solve for x
    x = 70,775.68/353.12
  6. Step 6: Final answer
    x = 200.43

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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.