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Finding the Fourth Proportional to 718.96, 992.11 and 453.44

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Solution

The fourth proportional to 718.96, 992.11 and 453.44 is: 625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.96 : 992.11 = 453.44 : x
  2. Step 2: Convert to fraction form
    718.96/992.11 = 453.44/x
  3. Step 3: Cross multiply
    718.96x = 992.11 × 453.44
  4. Step 4: Simplify right side
    718.96x = 449,862.36
  5. Step 5: Solve for x
    x = 449,862.36/718.96
  6. Step 6: Final answer
    x = 625.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.