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Finding the Third Proportional to 30.17 and 66.03

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Solution

The third proportional to 30.17 and 66.03 is: 144.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.17 : 66.03 = 66.03 : x
  2. Step 2: Convert to fraction form
    30.17/66.03 = 66.03/x
  3. Step 3: Cross multiply
    30.17x = 66.03 × 66.03
  4. Step 4: Simplify right side
    30.17x = 4,359.96
  5. Step 5: Solve for x
    x = 4,359.96/30.17
  6. Step 6: Final answer
    x = 144.53

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.