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Finding the Fourth Proportional to 329.35, 454.15 and 245.35

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Solution

The fourth proportional to 329.35, 454.15 and 245.35 is: 338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.35 : 454.15 = 245.35 : x
  2. Step 2: Convert to fraction form
    329.35/454.15 = 245.35/x
  3. Step 3: Cross multiply
    329.35x = 454.15 × 245.35
  4. Step 4: Simplify right side
    329.35x = 111,424.48
  5. Step 5: Solve for x
    x = 111,424.48/329.35
  6. Step 6: Final answer
    x = 338.32

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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.