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Finding the Fourth Proportional to 366.31, 505.58 and 226.40

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Solution

The fourth proportional to 366.31, 505.58 and 226.40 is: 312.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.31 : 505.58 = 226.40 : x
  2. Step 2: Convert to fraction form
    366.31/505.58 = 226.40/x
  3. Step 3: Cross multiply
    366.31x = 505.58 × 226.40
  4. Step 4: Simplify right side
    366.31x = 114,461.56
  5. Step 5: Solve for x
    x = 114,461.56/366.31
  6. Step 6: Final answer
    x = 312.47

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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.