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Finding the Fourth Proportional to 1,511.25, 2,266.89 and 537.39

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Solution

The fourth proportional to 1,511.25, 2,266.89 and 537.39 is: 806.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.25 : 2,266.89 = 537.39 : x
  2. Step 2: Convert to fraction form
    1,511.25/2,266.89 = 537.39/x
  3. Step 3: Cross multiply
    1,511.25x = 2,266.89 × 537.39
  4. Step 4: Simplify right side
    1,511.25x = 1,218,204.02
  5. Step 5: Solve for x
    x = 1,218,204.02/1,511.25
  6. Step 6: Final answer
    x = 806.09

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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.