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Finding the Fourth Proportional to 1,672.22, 2,508.74 and 517.97

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Solution

The fourth proportional to 1,672.22, 2,508.74 and 517.97 is: 777.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.22 : 2,508.74 = 517.97 : x
  2. Step 2: Convert to fraction form
    1,672.22/2,508.74 = 517.97/x
  3. Step 3: Cross multiply
    1,672.22x = 2,508.74 × 517.97
  4. Step 4: Simplify right side
    1,672.22x = 1,299,436.92
  5. Step 5: Solve for x
    x = 1,299,436.92/1,672.22
  6. Step 6: Final answer
    x = 777.08

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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.