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Finding the Fourth Proportional to 983.26, 1,356.92 and 541.18

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Solution

The fourth proportional to 983.26, 1,356.92 and 541.18 is: 746.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.26 : 1,356.92 = 541.18 : x
  2. Step 2: Convert to fraction form
    983.26/1,356.92 = 541.18/x
  3. Step 3: Cross multiply
    983.26x = 1,356.92 × 541.18
  4. Step 4: Simplify right side
    983.26x = 734,337.97
  5. Step 5: Solve for x
    x = 734,337.97/983.26
  6. Step 6: Final answer
    x = 746.84

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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.