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Finding the Fourth Proportional to 1,817.07, 2,725.64 and 518.57

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Solution

The fourth proportional to 1,817.07, 2,725.64 and 518.57 is: 777.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.07 : 2,725.64 = 518.57 : x
  2. Step 2: Convert to fraction form
    1,817.07/2,725.64 = 518.57/x
  3. Step 3: Cross multiply
    1,817.07x = 2,725.64 × 518.57
  4. Step 4: Simplify right side
    1,817.07x = 1,413,435.13
  5. Step 5: Solve for x
    x = 1,413,435.13/1,817.07
  6. Step 6: Final answer
    x = 777.86

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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.