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Finding the Fourth Proportional to 982.97, 1,356.50 and 540.89

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Solution

The fourth proportional to 982.97, 1,356.50 and 540.89 is: 746.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.97 : 1,356.50 = 540.89 : x
  2. Step 2: Convert to fraction form
    982.97/1,356.50 = 540.89/x
  3. Step 3: Cross multiply
    982.97x = 1,356.50 × 540.89
  4. Step 4: Simplify right side
    982.97x = 733,721.53
  5. Step 5: Solve for x
    x = 733,721.53/982.97
  6. Step 6: Final answer
    x = 746.43

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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.