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Finding the Fourth Proportional to 1,647.56, 2,471.30 and 673.66

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Solution

The fourth proportional to 1,647.56, 2,471.30 and 673.66 is: 1,010.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.56 : 2,471.30 = 673.66 : x
  2. Step 2: Convert to fraction form
    1,647.56/2,471.30 = 673.66/x
  3. Step 3: Cross multiply
    1,647.56x = 2,471.30 × 673.66
  4. Step 4: Simplify right side
    1,647.56x = 1,664,815.96
  5. Step 5: Solve for x
    x = 1,664,815.96/1,647.56
  6. Step 6: Final answer
    x = 1,010.47

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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.