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Finding the Fourth Proportional to 453.22, 621.25 and 447.06

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Solution

The fourth proportional to 453.22, 621.25 and 447.06 is: 612.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.22 : 621.25 = 447.06 : x
  2. Step 2: Convert to fraction form
    453.22/621.25 = 447.06/x
  3. Step 3: Cross multiply
    453.22x = 621.25 × 447.06
  4. Step 4: Simplify right side
    453.22x = 277,737.24
  5. Step 5: Solve for x
    x = 277,737.24/453.22
  6. Step 6: Final answer
    x = 612.81

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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.