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Finding the Fourth Proportional to 2,000.02, 2,999.94 and 613.28

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Solution

The fourth proportional to 2,000.02, 2,999.94 and 613.28 is: 919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.02 : 2,999.94 = 613.28 : x
  2. Step 2: Convert to fraction form
    2,000.02/2,999.94 = 613.28/x
  3. Step 3: Cross multiply
    2,000.02x = 2,999.94 × 613.28
  4. Step 4: Simplify right side
    2,000.02x = 1,839,813.58
  5. Step 5: Solve for x
    x = 1,839,813.58/2,000.02
  6. Step 6: Final answer
    x = 919.90

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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.