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Finding the Fourth Proportional to 506.70, 759.91 and 198.34

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Solution

The fourth proportional to 506.70, 759.91 and 198.34 is: 297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.70 : 759.91 = 198.34 : x
  2. Step 2: Convert to fraction form
    506.70/759.91 = 198.34/x
  3. Step 3: Cross multiply
    506.70x = 759.91 × 198.34
  4. Step 4: Simplify right side
    506.70x = 150,715.76
  5. Step 5: Solve for x
    x = 150,715.76/506.70
  6. Step 6: Final answer
    x = 297.45

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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.