Finding the Third Proportional to 135 and 153
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Solution
The third proportional to 135 and 153 is: 173.40
Step by Step Solution
- Step 1: Write the proportion equation
135 : 153 = 153 : x - Step 2: Convert to fraction form
135/153 = 153/x - Step 3: Cross multiply
135x = 153 × 153 - Step 4: Simplify right side
135x = 23,409 - Step 5: Solve for x
x = 23,409/135 - Step 6: Final answer
x = 173.40
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Why These Related Problems?
These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.