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Finding the Fourth Proportional to 1,644.47, 2,466.42 and 548.78

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Solution

The fourth proportional to 1,644.47, 2,466.42 and 548.78 is: 823.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.47 : 2,466.42 = 548.78 : x
  2. Step 2: Convert to fraction form
    1,644.47/2,466.42 = 548.78/x
  3. Step 3: Cross multiply
    1,644.47x = 2,466.42 × 548.78
  4. Step 4: Simplify right side
    1,644.47x = 1,353,507.58
  5. Step 5: Solve for x
    x = 1,353,507.58/1,644.47
  6. Step 6: Final answer
    x = 823.07

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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.