Finding the Third Proportional to 485.50 and 939
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Solution
The third proportional to 485.50 and 939 is: 1,816.11
Step by Step Solution
- Step 1: Write the proportion equation
485.50 : 939 = 939 : x - Step 2: Convert to fraction form
485.50/939 = 939/x - Step 3: Cross multiply
485.50x = 939 × 939 - Step 4: Simplify right side
485.50x = 881,721 - Step 5: Solve for x
x = 881,721/485.50 - Step 6: Final answer
x = 1,816.11
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Why These Related Problems?
These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.