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Finding the Fourth Proportional to 1,759.58, 2,639.62 and 605.18

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Solution

The fourth proportional to 1,759.58, 2,639.62 and 605.18 is: 907.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.58 : 2,639.62 = 605.18 : x
  2. Step 2: Convert to fraction form
    1,759.58/2,639.62 = 605.18/x
  3. Step 3: Cross multiply
    1,759.58x = 2,639.62 × 605.18
  4. Step 4: Simplify right side
    1,759.58x = 1,597,445.23
  5. Step 5: Solve for x
    x = 1,597,445.23/1,759.58
  6. Step 6: Final answer
    x = 907.86

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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.