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Finding the Fourth Proportional to 982.86, 1,474.73 and 496.25

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Solution

The fourth proportional to 982.86, 1,474.73 and 496.25 is: 744.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.86 : 1,474.73 = 496.25 : x
  2. Step 2: Convert to fraction form
    982.86/1,474.73 = 496.25/x
  3. Step 3: Cross multiply
    982.86x = 1,474.73 × 496.25
  4. Step 4: Simplify right side
    982.86x = 731,824.91
  5. Step 5: Solve for x
    x = 731,824.91/982.86
  6. Step 6: Final answer
    x = 744.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.