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Finding the Fourth Proportional to 2,005.38, 3,007.84 and 544.42

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Solution

The fourth proportional to 2,005.38, 3,007.84 and 544.42 is: 816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.38 : 3,007.84 = 544.42 : x
  2. Step 2: Convert to fraction form
    2,005.38/3,007.84 = 544.42/x
  3. Step 3: Cross multiply
    2,005.38x = 3,007.84 × 544.42
  4. Step 4: Simplify right side
    2,005.38x = 1,637,528.25
  5. Step 5: Solve for x
    x = 1,637,528.25/2,005.38
  6. Step 6: Final answer
    x = 816.57

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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.