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Finding the Fourth Proportional to 1,174.71, 1,761.11 and 443.91

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Solution

The fourth proportional to 1,174.71, 1,761.11 and 443.91 is: 665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.71 : 1,761.11 = 443.91 : x
  2. Step 2: Convert to fraction form
    1,174.71/1,761.11 = 443.91/x
  3. Step 3: Cross multiply
    1,174.71x = 1,761.11 × 443.91
  4. Step 4: Simplify right side
    1,174.71x = 781,772.12
  5. Step 5: Solve for x
    x = 781,772.12/1,174.71
  6. Step 6: Final answer
    x = 665.50

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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.