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Finding the Fourth Proportional to 329.22, 454.30 and 189.32

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Solution

The fourth proportional to 329.22, 454.30 and 189.32 is: 261.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.22 : 454.30 = 189.32 : x
  2. Step 2: Convert to fraction form
    329.22/454.30 = 189.32/x
  3. Step 3: Cross multiply
    329.22x = 454.30 × 189.32
  4. Step 4: Simplify right side
    329.22x = 86,004.86
  5. Step 5: Solve for x
    x = 86,004.86/329.22
  6. Step 6: Final answer
    x = 261.24

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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.