Finding the Third Proportional to 189 and 513
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Solution
The third proportional to 189 and 513 is: 1,392.43
Step by Step Solution
- Step 1: Write the proportion equation
189 : 513 = 513 : x - Step 2: Convert to fraction form
189/513 = 513/x - Step 3: Cross multiply
189x = 513 × 513 - Step 4: Simplify right side
189x = 263,169 - Step 5: Solve for x
x = 263,169/189 - Step 6: Final answer
x = 1,392.43
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Why These Related Problems?
These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.