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Finding the Fourth Proportional to 1,644.48, 2,466.66 and 490.20

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Solution

The fourth proportional to 1,644.48, 2,466.66 and 490.20 is: 735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.48 : 2,466.66 = 490.20 : x
  2. Step 2: Convert to fraction form
    1,644.48/2,466.66 = 490.20/x
  3. Step 3: Cross multiply
    1,644.48x = 2,466.66 × 490.20
  4. Step 4: Simplify right side
    1,644.48x = 1,209,156.73
  5. Step 5: Solve for x
    x = 1,209,156.73/1,644.48
  6. Step 6: Final answer
    x = 735.28

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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.