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Finding the Fourth Proportional to 2,003.98, 3,005.95 and 543.13

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Solution

The fourth proportional to 2,003.98, 3,005.95 and 543.13 is: 814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,003.98 : 3,005.95 = 543.13 : x
  2. Step 2: Convert to fraction form
    2,003.98/3,005.95 = 543.13/x
  3. Step 3: Cross multiply
    2,003.98x = 3,005.95 × 543.13
  4. Step 4: Simplify right side
    2,003.98x = 1,632,621.62
  5. Step 5: Solve for x
    x = 1,632,621.62/2,003.98
  6. Step 6: Final answer
    x = 814.69

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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.