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Finding the Fourth Proportional to 626.59, 939.27 and 261.58

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Solution

The fourth proportional to 626.59, 939.27 and 261.58 is: 392.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.59 : 939.27 = 261.58 : x
  2. Step 2: Convert to fraction form
    626.59/939.27 = 261.58/x
  3. Step 3: Cross multiply
    626.59x = 939.27 × 261.58
  4. Step 4: Simplify right side
    626.59x = 245,694.25
  5. Step 5: Solve for x
    x = 245,694.25/626.59
  6. Step 6: Final answer
    x = 392.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.