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Finding the Fourth Proportional to 2,009.21, 3,013.68 and 548.51

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Solution

The fourth proportional to 2,009.21, 3,013.68 and 548.51 is: 822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.21 : 3,013.68 = 548.51 : x
  2. Step 2: Convert to fraction form
    2,009.21/3,013.68 = 548.51/x
  3. Step 3: Cross multiply
    2,009.21x = 3,013.68 × 548.51
  4. Step 4: Simplify right side
    2,009.21x = 1,653,033.62
  5. Step 5: Solve for x
    x = 1,653,033.62/2,009.21
  6. Step 6: Final answer
    x = 822.73

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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.