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Finding the Fourth Proportional to 1,753.07, 2,628.78 and 656.73

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Solution

The fourth proportional to 1,753.07, 2,628.78 and 656.73 is: 984.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.07 : 2,628.78 = 656.73 : x
  2. Step 2: Convert to fraction form
    1,753.07/2,628.78 = 656.73/x
  3. Step 3: Cross multiply
    1,753.07x = 2,628.78 × 656.73
  4. Step 4: Simplify right side
    1,753.07x = 1,726,398.69
  5. Step 5: Solve for x
    x = 1,726,398.69/1,753.07
  6. Step 6: Final answer
    x = 984.79

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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.