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Finding the Fourth Proportional to 2,179.78, 3,269.60 and 536.32

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Solution

The fourth proportional to 2,179.78, 3,269.60 and 536.32 is: 804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.78 : 3,269.60 = 536.32 : x
  2. Step 2: Convert to fraction form
    2,179.78/3,269.60 = 536.32/x
  3. Step 3: Cross multiply
    2,179.78x = 3,269.60 × 536.32
  4. Step 4: Simplify right side
    2,179.78x = 1,753,551.87
  5. Step 5: Solve for x
    x = 1,753,551.87/2,179.78
  6. Step 6: Final answer
    x = 804.46

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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.