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Finding the Fourth Proportional to 1,744.89, 2,616.94 and 512.38

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Solution

The fourth proportional to 1,744.89, 2,616.94 and 512.38 is: 768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.89 : 2,616.94 = 512.38 : x
  2. Step 2: Convert to fraction form
    1,744.89/2,616.94 = 512.38/x
  3. Step 3: Cross multiply
    1,744.89x = 2,616.94 × 512.38
  4. Step 4: Simplify right side
    1,744.89x = 1,340,867.72
  5. Step 5: Solve for x
    x = 1,340,867.72/1,744.89
  6. Step 6: Final answer
    x = 768.45

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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.