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Finding the Fourth Proportional to 366.64, 505.92 and 211.42

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Solution

The fourth proportional to 366.64, 505.92 and 211.42 is: 291.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.64 : 505.92 = 211.42 : x
  2. Step 2: Convert to fraction form
    366.64/505.92 = 211.42/x
  3. Step 3: Cross multiply
    366.64x = 505.92 × 211.42
  4. Step 4: Simplify right side
    366.64x = 106,961.61
  5. Step 5: Solve for x
    x = 106,961.61/366.64
  6. Step 6: Final answer
    x = 291.73

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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.