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Finding the Fourth Proportional to 2,242.17, 3,363.66 and 761.54

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Solution

The fourth proportional to 2,242.17, 3,363.66 and 761.54 is: 1,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,242.17 : 3,363.66 = 761.54 : x
  2. Step 2: Convert to fraction form
    2,242.17/3,363.66 = 761.54/x
  3. Step 3: Cross multiply
    2,242.17x = 3,363.66 × 761.54
  4. Step 4: Simplify right side
    2,242.17x = 2,561,544.82
  5. Step 5: Solve for x
    x = 2,561,544.82/2,242.17
  6. Step 6: Final answer
    x = 1,142.44

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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.