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Finding the Fourth Proportional to 1,171.37, 1,757.36 and 441

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Solution

The fourth proportional to 1,171.37, 1,757.36 and 441 is: 661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.37 : 1,757.36 = 441 : x
  2. Step 2: Convert to fraction form
    1,171.37/1,757.36 = 441/x
  3. Step 3: Cross multiply
    1,171.37x = 1,757.36 × 441
  4. Step 4: Simplify right side
    1,171.37x = 774,996.86
  5. Step 5: Solve for x
    x = 774,996.86/1,171.37
  6. Step 6: Final answer
    x = 661.61

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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.