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Finding the Fourth Proportional to 1,647.54, 2,471.43 and 493.26

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Solution

The fourth proportional to 1,647.54, 2,471.43 and 493.26 is: 739.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.54 : 2,471.43 = 493.26 : x
  2. Step 2: Convert to fraction form
    1,647.54/2,471.43 = 493.26/x
  3. Step 3: Cross multiply
    1,647.54x = 2,471.43 × 493.26
  4. Step 4: Simplify right side
    1,647.54x = 1,219,057.56
  5. Step 5: Solve for x
    x = 1,219,057.56/1,647.54
  6. Step 6: Final answer
    x = 739.93

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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.