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Finding the Fourth Proportional to 2,363.68, 3,545.71 and 720.22

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Solution

The fourth proportional to 2,363.68, 3,545.71 and 720.22 is: 1,080.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,363.68 : 3,545.71 = 720.22 : x
  2. Step 2: Convert to fraction form
    2,363.68/3,545.71 = 720.22/x
  3. Step 3: Cross multiply
    2,363.68x = 3,545.71 × 720.22
  4. Step 4: Simplify right side
    2,363.68x = 2,553,691.26
  5. Step 5: Solve for x
    x = 2,553,691.26/2,363.68
  6. Step 6: Final answer
    x = 1,080.39

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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.