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Finding the Fourth Proportional to 1,999.93, 3,000.25 and 613.24

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Solution

The fourth proportional to 1,999.93, 3,000.25 and 613.24 is: 919.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.93 : 3,000.25 = 613.24 : x
  2. Step 2: Convert to fraction form
    1,999.93/3,000.25 = 613.24/x
  3. Step 3: Cross multiply
    1,999.93x = 3,000.25 × 613.24
  4. Step 4: Simplify right side
    1,999.93x = 1,839,873.31
  5. Step 5: Solve for x
    x = 1,839,873.31/1,999.93
  6. Step 6: Final answer
    x = 919.97

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1.5x scale

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.