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Finding the Fourth Proportional to 1,759.35, 2,639.17 and 460.82

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Solution

The fourth proportional to 1,759.35, 2,639.17 and 460.82 is: 691.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.35 : 2,639.17 = 460.82 : x
  2. Step 2: Convert to fraction form
    1,759.35/2,639.17 = 460.82/x
  3. Step 3: Cross multiply
    1,759.35x = 2,639.17 × 460.82
  4. Step 4: Simplify right side
    1,759.35x = 1,216,169.12
  5. Step 5: Solve for x
    x = 1,216,169.12/1,759.35
  6. Step 6: Final answer
    x = 691.26

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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.