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Finding the Fourth Proportional to 496.35, 685.10 and 349.02

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Solution

The fourth proportional to 496.35, 685.10 and 349.02 is: 481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.35 : 685.10 = 349.02 : x
  2. Step 2: Convert to fraction form
    496.35/685.10 = 349.02/x
  3. Step 3: Cross multiply
    496.35x = 685.10 × 349.02
  4. Step 4: Simplify right side
    496.35x = 239,114.47
  5. Step 5: Solve for x
    x = 239,114.47/496.35
  6. Step 6: Final answer
    x = 481.75

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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.