Finding the Third Proportional to 121 and 239.50
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Solution
The third proportional to 121 and 239.50 is: 474.05
Step by Step Solution
- Step 1: Write the proportion equation
121 : 239.50 = 239.50 : x - Step 2: Convert to fraction form
121/239.50 = 239.50/x - Step 3: Cross multiply
121x = 239.50 × 239.50 - Step 4: Simplify right side
121x = 57,360.25 - Step 5: Solve for x
x = 57,360.25/121 - Step 6: Final answer
x = 474.05
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Why These Related Problems?
These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.