Finding the Third Proportional to 318 and 424
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Solution
The third proportional to 318 and 424 is: 565.33
Step by Step Solution
- Step 1: Write the proportion equation
318 : 424 = 424 : x - Step 2: Convert to fraction form
318/424 = 424/x - Step 3: Cross multiply
318x = 424 × 424 - Step 4: Simplify right side
318x = 179,776 - Step 5: Solve for x
x = 179,776/318 - Step 6: Final answer
x = 565.33
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Why These Related Problems?
These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.