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Finding the Fourth Proportional to 1,754.52, 2,631 and 658.11

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Solution

The fourth proportional to 1,754.52, 2,631 and 658.11 is: 986.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.52 : 2,631 = 658.11 : x
  2. Step 2: Convert to fraction form
    1,754.52/2,631 = 658.11/x
  3. Step 3: Cross multiply
    1,754.52x = 2,631 × 658.11
  4. Step 4: Simplify right side
    1,754.52x = 1,731,487.41
  5. Step 5: Solve for x
    x = 1,731,487.41/1,754.52
  6. Step 6: Final answer
    x = 986.87

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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.