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Finding the Third Proportional to 157.50 and 386.06

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Solution

The third proportional to 157.50 and 386.06 is: 946.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.50 : 386.06 = 386.06 : x
  2. Step 2: Convert to fraction form
    157.50/386.06 = 386.06/x
  3. Step 3: Cross multiply
    157.50x = 386.06 × 386.06
  4. Step 4: Simplify right side
    157.50x = 149,044.25
  5. Step 5: Solve for x
    x = 149,044.25/157.50
  6. Step 6: Final answer
    x = 946.31

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.