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Finding the Fourth Proportional to 506.92, 699.68 and 286.00

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Solution

The fourth proportional to 506.92, 699.68 and 286.00 is: 394.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.92 : 699.68 = 286.00 : x
  2. Step 2: Convert to fraction form
    506.92/699.68 = 286.00/x
  3. Step 3: Cross multiply
    506.92x = 699.68 × 286.00
  4. Step 4: Simplify right side
    506.92x = 200,107.45
  5. Step 5: Solve for x
    x = 200,107.45/506.92
  6. Step 6: Final answer
    x = 394.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.