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Finding the Fourth Proportional to 1,997.62, 2,996.77 and 610.63

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Solution

The fourth proportional to 1,997.62, 2,996.77 and 610.63 is: 916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.62 : 2,996.77 = 610.63 : x
  2. Step 2: Convert to fraction form
    1,997.62/2,996.77 = 610.63/x
  3. Step 3: Cross multiply
    1,997.62x = 2,996.77 × 610.63
  4. Step 4: Simplify right side
    1,997.62x = 1,829,932.40
  5. Step 5: Solve for x
    x = 1,829,932.40/1,997.62
  6. Step 6: Final answer
    x = 916.05

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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.