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Finding the Fourth Proportional to 1,377.88, 2,066.39 and 453.23

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Solution

The fourth proportional to 1,377.88, 2,066.39 and 453.23 is: 679.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.88 : 2,066.39 = 453.23 : x
  2. Step 2: Convert to fraction form
    1,377.88/2,066.39 = 453.23/x
  3. Step 3: Cross multiply
    1,377.88x = 2,066.39 × 453.23
  4. Step 4: Simplify right side
    1,377.88x = 936,558.41
  5. Step 5: Solve for x
    x = 936,558.41/1,377.88
  6. Step 6: Final answer
    x = 679.71

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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.