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Finding the Fourth Proportional to 626.02, 863.86 and 346.21

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Solution

The fourth proportional to 626.02, 863.86 and 346.21 is: 477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.02 : 863.86 = 346.21 : x
  2. Step 2: Convert to fraction form
    626.02/863.86 = 346.21/x
  3. Step 3: Cross multiply
    626.02x = 863.86 × 346.21
  4. Step 4: Simplify right side
    626.02x = 299,076.97
  5. Step 5: Solve for x
    x = 299,076.97/626.02
  6. Step 6: Final answer
    x = 477.74

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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.