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Finding the Fourth Proportional to 222.71, 307.26 and 144.05

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Solution

The fourth proportional to 222.71, 307.26 and 144.05 is: 198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.71 : 307.26 = 144.05 : x
  2. Step 2: Convert to fraction form
    222.71/307.26 = 144.05/x
  3. Step 3: Cross multiply
    222.71x = 307.26 × 144.05
  4. Step 4: Simplify right side
    222.71x = 44,259.27
  5. Step 5: Solve for x
    x = 44,259.27/222.71
  6. Step 6: Final answer
    x = 198.73

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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.