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Finding the Fourth Proportional to 626.06, 939.72 and 511.86

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Solution

The fourth proportional to 626.06, 939.72 and 511.86 is: 768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.06 : 939.72 = 511.86 : x
  2. Step 2: Convert to fraction form
    626.06/939.72 = 511.86/x
  3. Step 3: Cross multiply
    626.06x = 939.72 × 511.86
  4. Step 4: Simplify right side
    626.06x = 481,005.08
  5. Step 5: Solve for x
    x = 481,005.08/626.06
  6. Step 6: Final answer
    x = 768.31

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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.