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Finding the Fourth Proportional to 1,230.02, 1,844.63 and 408.07

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Solution

The fourth proportional to 1,230.02, 1,844.63 and 408.07 is: 611.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.02 : 1,844.63 = 408.07 : x
  2. Step 2: Convert to fraction form
    1,230.02/1,844.63 = 408.07/x
  3. Step 3: Cross multiply
    1,230.02x = 1,844.63 × 408.07
  4. Step 4: Simplify right side
    1,230.02x = 752,738.16
  5. Step 5: Solve for x
    x = 752,738.16/1,230.02
  6. Step 6: Final answer
    x = 611.97

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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.