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Finding the Third Proportional to 133.31 and 291.94

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Solution

The third proportional to 133.31 and 291.94 is: 639.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.31 : 291.94 = 291.94 : x
  2. Step 2: Convert to fraction form
    133.31/291.94 = 291.94/x
  3. Step 3: Cross multiply
    133.31x = 291.94 × 291.94
  4. Step 4: Simplify right side
    133.31x = 85,227.50
  5. Step 5: Solve for x
    x = 85,227.50/133.31
  6. Step 6: Final answer
    x = 639.31

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.