Finding the Third Proportional to 68.50 and 73
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Solution
The third proportional to 68.50 and 73 is: 77.80
Step by Step Solution
- Step 1: Write the proportion equation
68.50 : 73 = 73 : x - Step 2: Convert to fraction form
68.50/73 = 73/x - Step 3: Cross multiply
68.50x = 73 × 73 - Step 4: Simplify right side
68.50x = 5,329 - Step 5: Solve for x
x = 5,329/68.50 - Step 6: Final answer
x = 77.80
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Why These Related Problems?
These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.