Finding the Third Proportional to 438 and 513
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Solution
The third proportional to 438 and 513 is: 600.84
Step by Step Solution
- Step 1: Write the proportion equation
438 : 513 = 513 : x - Step 2: Convert to fraction form
438/513 = 513/x - Step 3: Cross multiply
438x = 513 × 513 - Step 4: Simplify right side
438x = 263,169 - Step 5: Solve for x
x = 263,169/438 - Step 6: Final answer
x = 600.84
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Why These Related Problems?
These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.