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Finding the Fourth Proportional to 1,163.13, 1,745.10 and 547.31

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Solution

The fourth proportional to 1,163.13, 1,745.10 and 547.31 is: 821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.13 : 1,745.10 = 547.31 : x
  2. Step 2: Convert to fraction form
    1,163.13/1,745.10 = 547.31/x
  3. Step 3: Cross multiply
    1,163.13x = 1,745.10 × 547.31
  4. Step 4: Simplify right side
    1,163.13x = 955,101.96
  5. Step 5: Solve for x
    x = 955,101.96/1,163.13
  6. Step 6: Final answer
    x = 821.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.