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Finding the Fourth Proportional to 496.37, 685.04 and 286.55

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Solution

The fourth proportional to 496.37, 685.04 and 286.55 is: 395.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.37 : 685.04 = 286.55 : x
  2. Step 2: Convert to fraction form
    496.37/685.04 = 286.55/x
  3. Step 3: Cross multiply
    496.37x = 685.04 × 286.55
  4. Step 4: Simplify right side
    496.37x = 196,293.35
  5. Step 5: Solve for x
    x = 196,293.35/496.37
  6. Step 6: Final answer
    x = 395.46

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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.