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Finding the Third Proportional to 14.63 and 31.75

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Solution

The third proportional to 14.63 and 31.75 is: 68.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.63 : 31.75 = 31.75 : x
  2. Step 2: Convert to fraction form
    14.63/31.75 = 31.75/x
  3. Step 3: Cross multiply
    14.63x = 31.75 × 31.75
  4. Step 4: Simplify right side
    14.63x = 1,008.06
  5. Step 5: Solve for x
    x = 1,008.06/14.63
  6. Step 6: Final answer
    x = 68.93

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.