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Finding the Fourth Proportional to 2,003.54, 3,005.64 and 616.88

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Solution

The fourth proportional to 2,003.54, 3,005.64 and 616.88 is: 925.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,003.54 : 3,005.64 = 616.88 : x
  2. Step 2: Convert to fraction form
    2,003.54/3,005.64 = 616.88/x
  3. Step 3: Cross multiply
    2,003.54x = 3,005.64 × 616.88
  4. Step 4: Simplify right side
    2,003.54x = 1,854,109.81
  5. Step 5: Solve for x
    x = 1,854,109.81/2,003.54
  6. Step 6: Final answer
    x = 925.42

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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.