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Finding the Fourth Proportional to 222.10, 332.51 and 214.81

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Solution

The fourth proportional to 222.10, 332.51 and 214.81 is: 321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.10 : 332.51 = 214.81 : x
  2. Step 2: Convert to fraction form
    222.10/332.51 = 214.81/x
  3. Step 3: Cross multiply
    222.10x = 332.51 × 214.81
  4. Step 4: Simplify right side
    222.10x = 71,427.32
  5. Step 5: Solve for x
    x = 71,427.32/222.10
  6. Step 6: Final answer
    x = 321.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.