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Finding the Fourth Proportional to 626.95, 939.92 and 297.71

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Solution

The fourth proportional to 626.95, 939.92 and 297.71 is: 446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.95 : 939.92 = 297.71 : x
  2. Step 2: Convert to fraction form
    626.95/939.92 = 297.71/x
  3. Step 3: Cross multiply
    626.95x = 939.92 × 297.71
  4. Step 4: Simplify right side
    626.95x = 279,817.40
  5. Step 5: Solve for x
    x = 279,817.40/626.95
  6. Step 6: Final answer
    x = 446.32

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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.