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Finding the Third Proportional to 61.50 and 133.13

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Solution

The third proportional to 61.50 and 133.13 is: 288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.50 : 133.13 = 133.13 : x
  2. Step 2: Convert to fraction form
    61.50/133.13 = 133.13/x
  3. Step 3: Cross multiply
    61.50x = 133.13 × 133.13
  4. Step 4: Simplify right side
    61.50x = 17,722.27
  5. Step 5: Solve for x
    x = 17,722.27/61.50
  6. Step 6: Final answer
    x = 288.17

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.