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Finding the Fourth Proportional to 429.35, 591.92 and 271.90

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Solution

The fourth proportional to 429.35, 591.92 and 271.90 is: 374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.35 : 591.92 = 271.90 : x
  2. Step 2: Convert to fraction form
    429.35/591.92 = 271.90/x
  3. Step 3: Cross multiply
    429.35x = 591.92 × 271.90
  4. Step 4: Simplify right side
    429.35x = 160,940.21
  5. Step 5: Solve for x
    x = 160,940.21/429.35
  6. Step 6: Final answer
    x = 374.85

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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.