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Finding the Fourth Proportional to 983.93, 1,357.82 and 541.83

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Solution

The fourth proportional to 983.93, 1,357.82 and 541.83 is: 747.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.93 : 1,357.82 = 541.83 : x
  2. Step 2: Convert to fraction form
    983.93/1,357.82 = 541.83/x
  3. Step 3: Cross multiply
    983.93x = 1,357.82 × 541.83
  4. Step 4: Simplify right side
    983.93x = 735,707.44
  5. Step 5: Solve for x
    x = 735,707.44/983.93
  6. Step 6: Final answer
    x = 747.72

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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.