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Finding the Fourth Proportional to 329.24, 454.27 and 189.40

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Solution

The fourth proportional to 329.24, 454.27 and 189.40 is: 261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.24 : 454.27 = 189.40 : x
  2. Step 2: Convert to fraction form
    329.24/454.27 = 189.40/x
  3. Step 3: Cross multiply
    329.24x = 454.27 × 189.40
  4. Step 4: Simplify right side
    329.24x = 86,037.60
  5. Step 5: Solve for x
    x = 86,037.60/329.24
  6. Step 6: Final answer
    x = 261.32

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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.