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Finding the Fourth Proportional to 626.06, 938.18 and 351.78

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Solution

The fourth proportional to 626.06, 938.18 and 351.78 is: 527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.06 : 938.18 = 351.78 : x
  2. Step 2: Convert to fraction form
    626.06/938.18 = 351.78/x
  3. Step 3: Cross multiply
    626.06x = 938.18 × 351.78
  4. Step 4: Simplify right side
    626.06x = 330,030.32
  5. Step 5: Solve for x
    x = 330,030.32/626.06
  6. Step 6: Final answer
    x = 527.15

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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.