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Finding the Fourth Proportional to 353.32, 529.92 and 136.96

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Solution

The fourth proportional to 353.32, 529.92 and 136.96 is: 205.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.32 : 529.92 = 136.96 : x
  2. Step 2: Convert to fraction form
    353.32/529.92 = 136.96/x
  3. Step 3: Cross multiply
    353.32x = 529.92 × 136.96
  4. Step 4: Simplify right side
    353.32x = 72,577.84
  5. Step 5: Solve for x
    x = 72,577.84/353.32
  6. Step 6: Final answer
    x = 205.42

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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.