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Finding the Fourth Proportional to 222.44, 331.31 and 210.87

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Solution

The fourth proportional to 222.44, 331.31 and 210.87 is: 314.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.44 : 331.31 = 210.87 : x
  2. Step 2: Convert to fraction form
    222.44/331.31 = 210.87/x
  3. Step 3: Cross multiply
    222.44x = 331.31 × 210.87
  4. Step 4: Simplify right side
    222.44x = 69,863.34
  5. Step 5: Solve for x
    x = 69,863.34/222.44
  6. Step 6: Final answer
    x = 314.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.