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Finding the Fourth Proportional to 1,755.90, 2,633.13 and 659.68

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Solution

The fourth proportional to 1,755.90, 2,633.13 and 659.68 is: 989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.90 : 2,633.13 = 659.68 : x
  2. Step 2: Convert to fraction form
    1,755.90/2,633.13 = 659.68/x
  3. Step 3: Cross multiply
    1,755.90x = 2,633.13 × 659.68
  4. Step 4: Simplify right side
    1,755.90x = 1,737,016.62
  5. Step 5: Solve for x
    x = 1,737,016.62/1,755.90
  6. Step 6: Final answer
    x = 989.25

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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.