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Finding the Fourth Proportional to 370.94, 511.88 and 211.44

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Solution

The fourth proportional to 370.94, 511.88 and 211.44 is: 291.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.94 : 511.88 = 211.44 : x
  2. Step 2: Convert to fraction form
    370.94/511.88 = 211.44/x
  3. Step 3: Cross multiply
    370.94x = 511.88 × 211.44
  4. Step 4: Simplify right side
    370.94x = 108,230.85
  5. Step 5: Solve for x
    x = 108,230.85/370.94
  6. Step 6: Final answer
    x = 291.78

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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.