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Finding the Fourth Proportional to 2,320.66, 3,481.56 and 677.32

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Solution

The fourth proportional to 2,320.66, 3,481.56 and 677.32 is: 1,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.66 : 3,481.56 = 677.32 : x
  2. Step 2: Convert to fraction form
    2,320.66/3,481.56 = 677.32/x
  3. Step 3: Cross multiply
    2,320.66x = 3,481.56 × 677.32
  4. Step 4: Simplify right side
    2,320.66x = 2,358,130.22
  5. Step 5: Solve for x
    x = 2,358,130.22/2,320.66
  6. Step 6: Final answer
    x = 1,016.15

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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.