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Finding the Fourth Proportional to 305.82, 422.69 and 270.60

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Solution

The fourth proportional to 305.82, 422.69 and 270.60 is: 374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.82 : 422.69 = 270.60 : x
  2. Step 2: Convert to fraction form
    305.82/422.69 = 270.60/x
  3. Step 3: Cross multiply
    305.82x = 422.69 × 270.60
  4. Step 4: Simplify right side
    305.82x = 114,379.91
  5. Step 5: Solve for x
    x = 114,379.91/305.82
  6. Step 6: Final answer
    x = 374.01

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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.