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Finding the Fourth Proportional to 453.25, 621.73 and 449.35

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Solution

The fourth proportional to 453.25, 621.73 and 449.35 is: 616.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.25 : 621.73 = 449.35 : x
  2. Step 2: Convert to fraction form
    453.25/621.73 = 449.35/x
  3. Step 3: Cross multiply
    453.25x = 621.73 × 449.35
  4. Step 4: Simplify right side
    453.25x = 279,374.38
  5. Step 5: Solve for x
    x = 279,374.38/453.25
  6. Step 6: Final answer
    x = 616.38

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.