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Finding the Fourth Proportional to 1,076.27, 1,614.18 and 491.11

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Solution

The fourth proportional to 1,076.27, 1,614.18 and 491.11 is: 736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.27 : 1,614.18 = 491.11 : x
  2. Step 2: Convert to fraction form
    1,076.27/1,614.18 = 491.11/x
  3. Step 3: Cross multiply
    1,076.27x = 1,614.18 × 491.11
  4. Step 4: Simplify right side
    1,076.27x = 792,729.41
  5. Step 5: Solve for x
    x = 792,729.41/1,076.27
  6. Step 6: Final answer
    x = 736.55

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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.