Finding the Third Proportional to 135 and 243.50
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Solution
The third proportional to 135 and 243.50 is: 439.20
Step by Step Solution
- Step 1: Write the proportion equation
135 : 243.50 = 243.50 : x - Step 2: Convert to fraction form
135/243.50 = 243.50/x - Step 3: Cross multiply
135x = 243.50 × 243.50 - Step 4: Simplify right side
135x = 59,292.25 - Step 5: Solve for x
x = 59,292.25/135 - Step 6: Final answer
x = 439.20
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Why These Related Problems?
These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.