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Finding the Fourth Proportional to 983.55, 1,357.25 and 541.44

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Solution

The fourth proportional to 983.55, 1,357.25 and 541.44 is: 747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.55 : 1,357.25 = 541.44 : x
  2. Step 2: Convert to fraction form
    983.55/1,357.25 = 541.44/x
  3. Step 3: Cross multiply
    983.55x = 1,357.25 × 541.44
  4. Step 4: Simplify right side
    983.55x = 734,869.44
  5. Step 5: Solve for x
    x = 734,869.44/983.55
  6. Step 6: Final answer
    x = 747.16

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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.