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Finding the Fourth Proportional to 1,753.96, 2,631.02 and 657.96

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Solution

The fourth proportional to 1,753.96, 2,631.02 and 657.96 is: 986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.96 : 2,631.02 = 657.96 : x
  2. Step 2: Convert to fraction form
    1,753.96/2,631.02 = 657.96/x
  3. Step 3: Cross multiply
    1,753.96x = 2,631.02 × 657.96
  4. Step 4: Simplify right side
    1,753.96x = 1,731,105.92
  5. Step 5: Solve for x
    x = 1,731,105.92/1,753.96
  6. Step 6: Final answer
    x = 986.97

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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.