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Finding the Fourth Proportional to 450.89, 622.44 and 303.76

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Solution

The fourth proportional to 450.89, 622.44 and 303.76 is: 419.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.89 : 622.44 = 303.76 : x
  2. Step 2: Convert to fraction form
    450.89/622.44 = 303.76/x
  3. Step 3: Cross multiply
    450.89x = 622.44 × 303.76
  4. Step 4: Simplify right side
    450.89x = 189,067.74
  5. Step 5: Solve for x
    x = 189,067.74/450.89
  6. Step 6: Final answer
    x = 419.33

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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.