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Finding the Fourth Proportional to 1,755.00, 2,631.67 and 521.97

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Solution

The fourth proportional to 1,755.00, 2,631.67 and 521.97 is: 782.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.00 : 2,631.67 = 521.97 : x
  2. Step 2: Convert to fraction form
    1,755.00/2,631.67 = 521.97/x
  3. Step 3: Cross multiply
    1,755.00x = 2,631.67 × 521.97
  4. Step 4: Simplify right side
    1,755.00x = 1,373,650.18
  5. Step 5: Solve for x
    x = 1,373,650.18/1,755.00
  6. Step 6: Final answer
    x = 782.71

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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.