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Finding the Fourth Proportional to 626.18, 938.91 and 301.55

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Solution

The fourth proportional to 626.18, 938.91 and 301.55 is: 452.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.18 : 938.91 = 301.55 : x
  2. Step 2: Convert to fraction form
    626.18/938.91 = 301.55/x
  3. Step 3: Cross multiply
    626.18x = 938.91 × 301.55
  4. Step 4: Simplify right side
    626.18x = 283,128.31
  5. Step 5: Solve for x
    x = 283,128.31/626.18
  6. Step 6: Final answer
    x = 452.15

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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.