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Finding the Fourth Proportional to 423.44, 634.55 and 179.63

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Solution

The fourth proportional to 423.44, 634.55 and 179.63 is: 269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.44 : 634.55 = 179.63 : x
  2. Step 2: Convert to fraction form
    423.44/634.55 = 179.63/x
  3. Step 3: Cross multiply
    423.44x = 634.55 × 179.63
  4. Step 4: Simplify right side
    423.44x = 113,984.22
  5. Step 5: Solve for x
    x = 113,984.22/423.44
  6. Step 6: Final answer
    x = 269.19

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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.