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Finding the Fourth Proportional to 1,171.82, 1,757.87 and 522.47

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Solution

The fourth proportional to 1,171.82, 1,757.87 and 522.47 is: 783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.82 : 1,757.87 = 522.47 : x
  2. Step 2: Convert to fraction form
    1,171.82/1,757.87 = 522.47/x
  3. Step 3: Cross multiply
    1,171.82x = 1,757.87 × 522.47
  4. Step 4: Simplify right side
    1,171.82x = 918,422.94
  5. Step 5: Solve for x
    x = 918,422.94/1,171.82
  6. Step 6: Final answer
    x = 783.76

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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.