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Finding the Fourth Proportional to 2,050.78, 3,076.14 and 664.16

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Solution

The fourth proportional to 2,050.78, 3,076.14 and 664.16 is: 996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,050.78 : 3,076.14 = 664.16 : x
  2. Step 2: Convert to fraction form
    2,050.78/3,076.14 = 664.16/x
  3. Step 3: Cross multiply
    2,050.78x = 3,076.14 × 664.16
  4. Step 4: Simplify right side
    2,050.78x = 2,043,049.14
  5. Step 5: Solve for x
    x = 2,043,049.14/2,050.78
  6. Step 6: Final answer
    x = 996.23

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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.