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Finding the Fourth Proportional to 418.23, 626.75 and 246.87

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Solution

The fourth proportional to 418.23, 626.75 and 246.87 is: 369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.23 : 626.75 = 246.87 : x
  2. Step 2: Convert to fraction form
    418.23/626.75 = 246.87/x
  3. Step 3: Cross multiply
    418.23x = 626.75 × 246.87
  4. Step 4: Simplify right side
    418.23x = 154,724.54
  5. Step 5: Solve for x
    x = 154,724.54/418.23
  6. Step 6: Final answer
    x = 369.95

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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.