Finding the Third Proportional to 128.25 and 283.50
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Solution
The third proportional to 128.25 and 283.50 is: 626.68
Step by Step Solution
- Step 1: Write the proportion equation
128.25 : 283.50 = 283.50 : x - Step 2: Convert to fraction form
128.25/283.50 = 283.50/x - Step 3: Cross multiply
128.25x = 283.50 × 283.50 - Step 4: Simplify right side
128.25x = 80,372.25 - Step 5: Solve for x
x = 80,372.25/128.25 - Step 6: Final answer
x = 626.68
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Why These Related Problems?
These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.