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Finding the Fourth Proportional to 351.44, 526.20 and 329.79

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Solution

The fourth proportional to 351.44, 526.20 and 329.79 is: 493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.44 : 526.20 = 329.79 : x
  2. Step 2: Convert to fraction form
    351.44/526.20 = 329.79/x
  3. Step 3: Cross multiply
    351.44x = 526.20 × 329.79
  4. Step 4: Simplify right side
    351.44x = 173,535.50
  5. Step 5: Solve for x
    x = 173,535.50/351.44
  6. Step 6: Final answer
    x = 493.78

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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.