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Finding the Fourth Proportional to 329.93, 455.03 and 205.35

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Solution

The fourth proportional to 329.93, 455.03 and 205.35 is: 283.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.93 : 455.03 = 205.35 : x
  2. Step 2: Convert to fraction form
    329.93/455.03 = 205.35/x
  3. Step 3: Cross multiply
    329.93x = 455.03 × 205.35
  4. Step 4: Simplify right side
    329.93x = 93,440.41
  5. Step 5: Solve for x
    x = 93,440.41/329.93
  6. Step 6: Final answer
    x = 283.22

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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.