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Finding the Fourth Proportional to 349.45, 524.87 and 219.68

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Solution

The fourth proportional to 349.45, 524.87 and 219.68 is: 329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.45 : 524.87 = 219.68 : x
  2. Step 2: Convert to fraction form
    349.45/524.87 = 219.68/x
  3. Step 3: Cross multiply
    349.45x = 524.87 × 219.68
  4. Step 4: Simplify right side
    349.45x = 115,304.48
  5. Step 5: Solve for x
    x = 115,304.48/349.45
  6. Step 6: Final answer
    x = 329.96

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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.