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Finding the Fourth Proportional to 1,644.58, 2,466.96 and 412.12

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Solution

The fourth proportional to 1,644.58, 2,466.96 and 412.12 is: 618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.58 : 2,466.96 = 412.12 : x
  2. Step 2: Convert to fraction form
    1,644.58/2,466.96 = 412.12/x
  3. Step 3: Cross multiply
    1,644.58x = 2,466.96 × 412.12
  4. Step 4: Simplify right side
    1,644.58x = 1,016,683.56
  5. Step 5: Solve for x
    x = 1,016,683.56/1,644.58
  6. Step 6: Final answer
    x = 618.20

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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.