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Finding the Fourth Proportional to 408.83, 564.38 and 269.03

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Solution

The fourth proportional to 408.83, 564.38 and 269.03 is: 371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.83 : 564.38 = 269.03 : x
  2. Step 2: Convert to fraction form
    408.83/564.38 = 269.03/x
  3. Step 3: Cross multiply
    408.83x = 564.38 × 269.03
  4. Step 4: Simplify right side
    408.83x = 151,837.23
  5. Step 5: Solve for x
    x = 151,837.23/408.83
  6. Step 6: Final answer
    x = 371.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.