Finding the Third Proportional to 491.50 and 878
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Solution
The third proportional to 491.50 and 878 is: 1,568.43
Step by Step Solution
- Step 1: Write the proportion equation
491.50 : 878 = 878 : x - Step 2: Convert to fraction form
491.50/878 = 878/x - Step 3: Cross multiply
491.50x = 878 × 878 - Step 4: Simplify right side
491.50x = 770,884 - Step 5: Solve for x
x = 770,884/491.50 - Step 6: Final answer
x = 1,568.43
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These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.