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Finding the Fourth Proportional to 454.92, 626.76 and 338.28

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Solution

The fourth proportional to 454.92, 626.76 and 338.28 is: 466.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.92 : 626.76 = 338.28 : x
  2. Step 2: Convert to fraction form
    454.92/626.76 = 338.28/x
  3. Step 3: Cross multiply
    454.92x = 626.76 × 338.28
  4. Step 4: Simplify right side
    454.92x = 212,020.37
  5. Step 5: Solve for x
    x = 212,020.37/454.92
  6. Step 6: Final answer
    x = 466.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.