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Finding the Fourth Proportional to 429.11, 591.94 and 329.79

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Solution

The fourth proportional to 429.11, 591.94 and 329.79 is: 454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.11 : 591.94 = 329.79 : x
  2. Step 2: Convert to fraction form
    429.11/591.94 = 329.79/x
  3. Step 3: Cross multiply
    429.11x = 591.94 × 329.79
  4. Step 4: Simplify right side
    429.11x = 195,215.89
  5. Step 5: Solve for x
    x = 195,215.89/429.11
  6. Step 6: Final answer
    x = 454.93

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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.