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Finding the Fourth Proportional to 496.54, 685.15 and 275.48

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Solution

The fourth proportional to 496.54, 685.15 and 275.48 is: 380.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.54 : 685.15 = 275.48 : x
  2. Step 2: Convert to fraction form
    496.54/685.15 = 275.48/x
  3. Step 3: Cross multiply
    496.54x = 685.15 × 275.48
  4. Step 4: Simplify right side
    496.54x = 188,745.12
  5. Step 5: Solve for x
    x = 188,745.12/496.54
  6. Step 6: Final answer
    x = 380.12

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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.