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Finding the Fourth Proportional to 626.14, 939.55 and 352.31

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Solution

The fourth proportional to 626.14, 939.55 and 352.31 is: 528.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.14 : 939.55 = 352.31 : x
  2. Step 2: Convert to fraction form
    626.14/939.55 = 352.31/x
  3. Step 3: Cross multiply
    626.14x = 939.55 × 352.31
  4. Step 4: Simplify right side
    626.14x = 331,012.86
  5. Step 5: Solve for x
    x = 331,012.86/626.14
  6. Step 6: Final answer
    x = 528.66

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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.