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Finding the Fourth Proportional to 2,253.66, 3,377.91 and 866.28

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Solution

The fourth proportional to 2,253.66, 3,377.91 and 866.28 is: 1,298.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.66 : 3,377.91 = 866.28 : x
  2. Step 2: Convert to fraction form
    2,253.66/3,377.91 = 866.28/x
  3. Step 3: Cross multiply
    2,253.66x = 3,377.91 × 866.28
  4. Step 4: Simplify right side
    2,253.66x = 2,926,211.54
  5. Step 5: Solve for x
    x = 2,926,211.54/2,253.66
  6. Step 6: Final answer
    x = 1,298.43

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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.