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Finding the Fourth Proportional to 222.30, 332.91 and 131.02

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Solution

The fourth proportional to 222.30, 332.91 and 131.02 is: 196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.30 : 332.91 = 131.02 : x
  2. Step 2: Convert to fraction form
    222.30/332.91 = 131.02/x
  3. Step 3: Cross multiply
    222.30x = 332.91 × 131.02
  4. Step 4: Simplify right side
    222.30x = 43,617.87
  5. Step 5: Solve for x
    x = 43,617.87/222.30
  6. Step 6: Final answer
    x = 196.21

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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.