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Finding the Fourth Proportional to 671.43, 926.64 and 450.84

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Solution

The fourth proportional to 671.43, 926.64 and 450.84 is: 622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.43 : 926.64 = 450.84 : x
  2. Step 2: Convert to fraction form
    671.43/926.64 = 450.84/x
  3. Step 3: Cross multiply
    671.43x = 926.64 × 450.84
  4. Step 4: Simplify right side
    671.43x = 417,766.38
  5. Step 5: Solve for x
    x = 417,766.38/671.43
  6. Step 6: Final answer
    x = 622.20

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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.