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Finding the Third Proportional to 70.13 and 147.56

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Solution

The third proportional to 70.13 and 147.56 is: 310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.13 : 147.56 = 147.56 : x
  2. Step 2: Convert to fraction form
    70.13/147.56 = 147.56/x
  3. Step 3: Cross multiply
    70.13x = 147.56 × 147.56
  4. Step 4: Simplify right side
    70.13x = 21,774.69
  5. Step 5: Solve for x
    x = 21,774.69/70.13
  6. Step 6: Final answer
    x = 310.51

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.