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Finding the Fourth Proportional to 496.83, 685.64 and 300.30

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Solution

The fourth proportional to 496.83, 685.64 and 300.30 is: 414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.83 : 685.64 = 300.30 : x
  2. Step 2: Convert to fraction form
    496.83/685.64 = 300.30/x
  3. Step 3: Cross multiply
    496.83x = 685.64 × 300.30
  4. Step 4: Simplify right side
    496.83x = 205,896.19
  5. Step 5: Solve for x
    x = 205,896.19/496.83
  6. Step 6: Final answer
    x = 414.42

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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.