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Finding the Fourth Proportional to 506.73, 759.75 and 409.35

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Solution

The fourth proportional to 506.73, 759.75 and 409.35 is: 613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.73 : 759.75 = 409.35 : x
  2. Step 2: Convert to fraction form
    506.73/759.75 = 409.35/x
  3. Step 3: Cross multiply
    506.73x = 759.75 × 409.35
  4. Step 4: Simplify right side
    506.73x = 311,003.66
  5. Step 5: Solve for x
    x = 311,003.66/506.73
  6. Step 6: Final answer
    x = 613.75

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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.