Finding the Third Proportional to 939 and 1,288.50
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Solution
The third proportional to 939 and 1,288.50 is: 1,768.09
Step by Step Solution
- Step 1: Write the proportion equation
939 : 1,288.50 = 1,288.50 : x - Step 2: Convert to fraction form
939/1,288.50 = 1,288.50/x - Step 3: Cross multiply
939x = 1,288.50 × 1,288.50 - Step 4: Simplify right side
939x = 1,660,232.25 - Step 5: Solve for x
x = 1,660,232.25/939 - Step 6: Final answer
x = 1,768.09
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.