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Finding the Fourth Proportional to 1,337.21, 2,006.07 and 515.41

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Solution

The fourth proportional to 1,337.21, 2,006.07 and 515.41 is: 773.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.21 : 2,006.07 = 515.41 : x
  2. Step 2: Convert to fraction form
    1,337.21/2,006.07 = 515.41/x
  3. Step 3: Cross multiply
    1,337.21x = 2,006.07 × 515.41
  4. Step 4: Simplify right side
    1,337.21x = 1,033,945.96
  5. Step 5: Solve for x
    x = 1,033,945.96/1,337.21
  6. Step 6: Final answer
    x = 773.21

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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.