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Finding the Fourth Proportional to 222.26, 333.42 and 77.99

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Solution

The fourth proportional to 222.26, 333.42 and 77.99 is: 117.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.26 : 333.42 = 77.99 : x
  2. Step 2: Convert to fraction form
    222.26/333.42 = 77.99/x
  3. Step 3: Cross multiply
    222.26x = 333.42 × 77.99
  4. Step 4: Simplify right side
    222.26x = 26,003.43
  5. Step 5: Solve for x
    x = 26,003.43/222.26
  6. Step 6: Final answer
    x = 117.00

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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.