Finding the Third Proportional to 318 and 693
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Solution
The third proportional to 318 and 693 is: 1,510.22
Step by Step Solution
- Step 1: Write the proportion equation
318 : 693 = 693 : x - Step 2: Convert to fraction form
318/693 = 693/x - Step 3: Cross multiply
318x = 693 × 693 - Step 4: Simplify right side
318x = 480,249 - Step 5: Solve for x
x = 480,249/318 - Step 6: Final answer
x = 1,510.22
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Why These Related Problems?
These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.