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Finding the Fourth Proportional to 419.08, 628.89 and 226.84

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Solution

The fourth proportional to 419.08, 628.89 and 226.84 is: 340.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.08 : 628.89 = 226.84 : x
  2. Step 2: Convert to fraction form
    419.08/628.89 = 226.84/x
  3. Step 3: Cross multiply
    419.08x = 628.89 × 226.84
  4. Step 4: Simplify right side
    419.08x = 142,657.41
  5. Step 5: Solve for x
    x = 142,657.41/419.08
  6. Step 6: Final answer
    x = 340.41

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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.