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Finding the Fourth Proportional to 417.44, 626.31 and 222.43

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Solution

The fourth proportional to 417.44, 626.31 and 222.43 is: 333.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.44 : 626.31 = 222.43 : x
  2. Step 2: Convert to fraction form
    417.44/626.31 = 222.43/x
  3. Step 3: Cross multiply
    417.44x = 626.31 × 222.43
  4. Step 4: Simplify right side
    417.44x = 139,307.00
  5. Step 5: Solve for x
    x = 139,307.00/417.44
  6. Step 6: Final answer
    x = 333.72

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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.