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Finding the Third Proportional to 61.16 and 89.44

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Solution

The third proportional to 61.16 and 89.44 is: 130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.16 : 89.44 = 89.44 : x
  2. Step 2: Convert to fraction form
    61.16/89.44 = 89.44/x
  3. Step 3: Cross multiply
    61.16x = 89.44 × 89.44
  4. Step 4: Simplify right side
    61.16x = 7,999.07
  5. Step 5: Solve for x
    x = 7,999.07/61.16
  6. Step 6: Final answer
    x = 130.80

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.