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Finding the Fourth Proportional to 1,660.03, 2,490.20 and 490.04

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Solution

The fourth proportional to 1,660.03, 2,490.20 and 490.04 is: 735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.03 : 2,490.20 = 490.04 : x
  2. Step 2: Convert to fraction form
    1,660.03/2,490.20 = 490.04/x
  3. Step 3: Cross multiply
    1,660.03x = 2,490.20 × 490.04
  4. Step 4: Simplify right side
    1,660.03x = 1,220,297.61
  5. Step 5: Solve for x
    x = 1,220,297.61/1,660.03
  6. Step 6: Final answer
    x = 735.11

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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.