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Finding the Third Proportional to 117.47 and 182.16

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Solution

The third proportional to 117.47 and 182.16 is: 282.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.47 : 182.16 = 182.16 : x
  2. Step 2: Convert to fraction form
    117.47/182.16 = 182.16/x
  3. Step 3: Cross multiply
    117.47x = 182.16 × 182.16
  4. Step 4: Simplify right side
    117.47x = 33,180.90
  5. Step 5: Solve for x
    x = 33,180.90/117.47
  6. Step 6: Final answer
    x = 282.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.