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Finding the Fourth Proportional to 1,892.30, 2,838.46 and 659.73

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Solution

The fourth proportional to 1,892.30, 2,838.46 and 659.73 is: 989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.30 : 2,838.46 = 659.73 : x
  2. Step 2: Convert to fraction form
    1,892.30/2,838.46 = 659.73/x
  3. Step 3: Cross multiply
    1,892.30x = 2,838.46 × 659.73
  4. Step 4: Simplify right side
    1,892.30x = 1,872,617.22
  5. Step 5: Solve for x
    x = 1,872,617.22/1,892.30
  6. Step 6: Final answer
    x = 989.60

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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.