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Finding the Third Proportional to 176.13 and 378.95

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Solution

The third proportional to 176.13 and 378.95 is: 815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.13 : 378.95 = 378.95 : x
  2. Step 2: Convert to fraction form
    176.13/378.95 = 378.95/x
  3. Step 3: Cross multiply
    176.13x = 378.95 × 378.95
  4. Step 4: Simplify right side
    176.13x = 143,602.51
  5. Step 5: Solve for x
    x = 143,602.51/176.13
  6. Step 6: Final answer
    x = 815.31

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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.