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Finding the Fourth Proportional to 450.81, 622.08 and 276.12

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Solution

The fourth proportional to 450.81, 622.08 and 276.12 is: 381.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.81 : 622.08 = 276.12 : x
  2. Step 2: Convert to fraction form
    450.81/622.08 = 276.12/x
  3. Step 3: Cross multiply
    450.81x = 622.08 × 276.12
  4. Step 4: Simplify right side
    450.81x = 171,768.73
  5. Step 5: Solve for x
    x = 171,768.73/450.81
  6. Step 6: Final answer
    x = 381.02

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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.