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Finding the Fourth Proportional to 344.69, 476.57 and 329.39

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Solution

The fourth proportional to 344.69, 476.57 and 329.39 is: 455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.69 : 476.57 = 329.39 : x
  2. Step 2: Convert to fraction form
    344.69/476.57 = 329.39/x
  3. Step 3: Cross multiply
    344.69x = 476.57 × 329.39
  4. Step 4: Simplify right side
    344.69x = 156,977.39
  5. Step 5: Solve for x
    x = 156,977.39/344.69
  6. Step 6: Final answer
    x = 455.42

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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.