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Finding the Fourth Proportional to 462.69, 638.73 and 329.94

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Solution

The fourth proportional to 462.69, 638.73 and 329.94 is: 455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.69 : 638.73 = 329.94 : x
  2. Step 2: Convert to fraction form
    462.69/638.73 = 329.94/x
  3. Step 3: Cross multiply
    462.69x = 638.73 × 329.94
  4. Step 4: Simplify right side
    462.69x = 210,742.58
  5. Step 5: Solve for x
    x = 210,742.58/462.69
  6. Step 6: Final answer
    x = 455.47

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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.