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Finding the Fourth Proportional to 506.74, 698.48 and 396.03

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Solution

The fourth proportional to 506.74, 698.48 and 396.03 is: 545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.74 : 698.48 = 396.03 : x
  2. Step 2: Convert to fraction form
    506.74/698.48 = 396.03/x
  3. Step 3: Cross multiply
    506.74x = 698.48 × 396.03
  4. Step 4: Simplify right side
    506.74x = 276,619.03
  5. Step 5: Solve for x
    x = 276,619.03/506.74
  6. Step 6: Final answer
    x = 545.88

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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.