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Finding the Fourth Proportional to 626.14, 938.18 and 442.64

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Solution

The fourth proportional to 626.14, 938.18 and 442.64 is: 663.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.14 : 938.18 = 442.64 : x
  2. Step 2: Convert to fraction form
    626.14/938.18 = 442.64/x
  3. Step 3: Cross multiply
    626.14x = 938.18 × 442.64
  4. Step 4: Simplify right side
    626.14x = 415,276.00
  5. Step 5: Solve for x
    x = 415,276.00/626.14
  6. Step 6: Final answer
    x = 663.23

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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.