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Finding the Fourth Proportional to 1,076.15, 1,614.11 and 490.98

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Solution

The fourth proportional to 1,076.15, 1,614.11 and 490.98 is: 736.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.15 : 1,614.11 = 490.98 : x
  2. Step 2: Convert to fraction form
    1,076.15/1,614.11 = 490.98/x
  3. Step 3: Cross multiply
    1,076.15x = 1,614.11 × 490.98
  4. Step 4: Simplify right side
    1,076.15x = 792,495.73
  5. Step 5: Solve for x
    x = 792,495.73/1,076.15
  6. Step 6: Final answer
    x = 736.42

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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.