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Finding the Fourth Proportional to 653.36, 982.08 and 411.44

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Solution

The fourth proportional to 653.36, 982.08 and 411.44 is: 618.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.36 : 982.08 = 411.44 : x
  2. Step 2: Convert to fraction form
    653.36/982.08 = 411.44/x
  3. Step 3: Cross multiply
    653.36x = 982.08 × 411.44
  4. Step 4: Simplify right side
    653.36x = 404,067.00
  5. Step 5: Solve for x
    x = 404,067.00/653.36
  6. Step 6: Final answer
    x = 618.44

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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.