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Finding the Fourth Proportional to 1,174.21, 1,761.41 and 352.48

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Solution

The fourth proportional to 1,174.21, 1,761.41 and 352.48 is: 528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.21 : 1,761.41 = 352.48 : x
  2. Step 2: Convert to fraction form
    1,174.21/1,761.41 = 352.48/x
  3. Step 3: Cross multiply
    1,174.21x = 1,761.41 × 352.48
  4. Step 4: Simplify right side
    1,174.21x = 620,867.12
  5. Step 5: Solve for x
    x = 620,867.12/1,174.21
  6. Step 6: Final answer
    x = 528.75

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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.