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Finding the Fourth Proportional to 496.77, 685.17 and 300.03

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Solution

The fourth proportional to 496.77, 685.17 and 300.03 is: 413.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.77 : 685.17 = 300.03 : x
  2. Step 2: Convert to fraction form
    496.77/685.17 = 300.03/x
  3. Step 3: Cross multiply
    496.77x = 685.17 × 300.03
  4. Step 4: Simplify right side
    496.77x = 205,571.56
  5. Step 5: Solve for x
    x = 205,571.56/496.77
  6. Step 6: Final answer
    x = 413.82

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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.