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Finding the Fourth Proportional to 1,600.83, 2,399.88 and 613.09

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Solution

The fourth proportional to 1,600.83, 2,399.88 and 613.09 is: 919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,600.83 : 2,399.88 = 613.09 : x
  2. Step 2: Convert to fraction form
    1,600.83/2,399.88 = 613.09/x
  3. Step 3: Cross multiply
    1,600.83x = 2,399.88 × 613.09
  4. Step 4: Simplify right side
    1,600.83x = 1,471,330.78
  5. Step 5: Solve for x
    x = 1,471,330.78/1,600.83
  6. Step 6: Final answer
    x = 919.10

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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.