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Finding the Fourth Proportional to 2,216.61, 3,325.28 and 677.25

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Solution

The fourth proportional to 2,216.61, 3,325.28 and 677.25 is: 1,015.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.61 : 3,325.28 = 677.25 : x
  2. Step 2: Convert to fraction form
    2,216.61/3,325.28 = 677.25/x
  3. Step 3: Cross multiply
    2,216.61x = 3,325.28 × 677.25
  4. Step 4: Simplify right side
    2,216.61x = 2,252,042.49
  5. Step 5: Solve for x
    x = 2,252,042.49/2,216.61
  6. Step 6: Final answer
    x = 1,015.98

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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.