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Finding the Fourth Proportional to 222.35, 333.32 and 145.40

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Solution

The fourth proportional to 222.35, 333.32 and 145.40 is: 217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.35 : 333.32 = 145.40 : x
  2. Step 2: Convert to fraction form
    222.35/333.32 = 145.40/x
  3. Step 3: Cross multiply
    222.35x = 333.32 × 145.40
  4. Step 4: Simplify right side
    222.35x = 48,462.33
  5. Step 5: Solve for x
    x = 48,462.33/222.35
  6. Step 6: Final answer
    x = 217.96

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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.