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Finding the Fourth Proportional to 1,772.44, 2,659.07 and 618.19

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Solution

The fourth proportional to 1,772.44, 2,659.07 and 618.19 is: 927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.44 : 2,659.07 = 618.19 : x
  2. Step 2: Convert to fraction form
    1,772.44/2,659.07 = 618.19/x
  3. Step 3: Cross multiply
    1,772.44x = 2,659.07 × 618.19
  4. Step 4: Simplify right side
    1,772.44x = 1,643,805.38
  5. Step 5: Solve for x
    x = 1,643,805.38/1,772.44
  6. Step 6: Final answer
    x = 927.43

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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.