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Finding the Fourth Proportional to 506.88, 699.91 and 396.92

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Solution

The fourth proportional to 506.88, 699.91 and 396.92 is: 548.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.88 : 699.91 = 396.92 : x
  2. Step 2: Convert to fraction form
    506.88/699.91 = 396.92/x
  3. Step 3: Cross multiply
    506.88x = 699.91 × 396.92
  4. Step 4: Simplify right side
    506.88x = 277,809.03
  5. Step 5: Solve for x
    x = 277,809.03/506.88
  6. Step 6: Final answer
    x = 548.08

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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.