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Finding the Fourth Proportional to 983.27, 1,356.93 and 541.22

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Solution

The fourth proportional to 983.27, 1,356.93 and 541.22 is: 746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.27 : 1,356.93 = 541.22 : x
  2. Step 2: Convert to fraction form
    983.27/1,356.93 = 541.22/x
  3. Step 3: Cross multiply
    983.27x = 1,356.93 × 541.22
  4. Step 4: Simplify right side
    983.27x = 734,390.87
  5. Step 5: Solve for x
    x = 734,390.87/983.27
  6. Step 6: Final answer
    x = 746.89

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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.