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Finding the Fourth Proportional to 506.49, 759.67 and 217.89

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Solution

The fourth proportional to 506.49, 759.67 and 217.89 is: 326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.49 : 759.67 = 217.89 : x
  2. Step 2: Convert to fraction form
    506.49/759.67 = 217.89/x
  3. Step 3: Cross multiply
    506.49x = 759.67 × 217.89
  4. Step 4: Simplify right side
    506.49x = 165,524.50
  5. Step 5: Solve for x
    x = 165,524.50/506.49
  6. Step 6: Final answer
    x = 326.81

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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.