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Finding the Third Proportional to 140.63 and 302.63

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Solution

The third proportional to 140.63 and 302.63 is: 651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.63 : 302.63 = 302.63 : x
  2. Step 2: Convert to fraction form
    140.63/302.63 = 302.63/x
  3. Step 3: Cross multiply
    140.63x = 302.63 × 302.63
  4. Step 4: Simplify right side
    140.63x = 91,581.89
  5. Step 5: Solve for x
    x = 91,581.89/140.63
  6. Step 6: Final answer
    x = 651.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.