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Finding the Third Proportional to 140.63 and 202.88

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Solution

The third proportional to 140.63 and 202.88 is: 292.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.63 : 202.88 = 202.88 : x
  2. Step 2: Convert to fraction form
    140.63/202.88 = 202.88/x
  3. Step 3: Cross multiply
    140.63x = 202.88 × 202.88
  4. Step 4: Simplify right side
    140.63x = 41,158.27
  5. Step 5: Solve for x
    x = 41,158.27/140.63
  6. Step 6: Final answer
    x = 292.68

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.