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Finding the Third Proportional to 133 and 228.75

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Solution

The third proportional to 133 and 228.75 is: 393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    133 : 228.75 = 228.75 : x
  2. Step 2: Convert to fraction form
    133/228.75 = 228.75/x
  3. Step 3: Cross multiply
    133x = 228.75 × 228.75
  4. Step 4: Simplify right side
    133x = 52,326.56
  5. Step 5: Solve for x
    x = 52,326.56/133
  6. Step 6: Final answer
    x = 393.43

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Why These Related Problems?

These problems maintain the same ratio (1.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.