Finding the Third Proportional to 1,090 and 1,218
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Solution
The third proportional to 1,090 and 1,218 is: 1,361.03
Step by Step Solution
- Step 1: Write the proportion equation
1,090 : 1,218 = 1,218 : x - Step 2: Convert to fraction form
1,090/1,218 = 1,218/x - Step 3: Cross multiply
1,090x = 1,218 × 1,218 - Step 4: Simplify right side
1,090x = 1,483,524 - Step 5: Solve for x
x = 1,483,524/1,090 - Step 6: Final answer
x = 1,361.03
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Why These Related Problems?
These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.