Finding the Third Proportional to 520 and 636
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Solution
The third proportional to 520 and 636 is: 777.88
Step by Step Solution
- Step 1: Write the proportion equation
520 : 636 = 636 : x - Step 2: Convert to fraction form
520/636 = 636/x - Step 3: Cross multiply
520x = 636 × 636 - Step 4: Simplify right side
520x = 404,496 - Step 5: Solve for x
x = 404,496/520 - Step 6: Final answer
x = 777.88
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These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.