Finding the Third Proportional to 2.16 and 3.28
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Solution
The third proportional to 2.16 and 3.28 is: 4.99
Step by Step Solution
- Step 1: Write the proportion equation
2.16 : 3.28 = 3.28 : x - Step 2: Convert to fraction form
2.16/3.28 = 3.28/x - Step 3: Cross multiply
2.16x = 3.28 × 3.28 - Step 4: Simplify right side
2.16x = 10.77 - Step 5: Solve for x
x = 10.77/2.16 - Step 6: Final answer
x = 4.99
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Why These Related Problems?
These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.