Finding the Third Proportional to 547 and 989
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Solution
The third proportional to 547 and 989 is: 1,788.16
Step by Step Solution
- Step 1: Write the proportion equation
547 : 989 = 989 : x - Step 2: Convert to fraction form
547/989 = 989/x - Step 3: Cross multiply
547x = 989 × 989 - Step 4: Simplify right side
547x = 978,121 - Step 5: Solve for x
x = 978,121/547 - Step 6: Final answer
x = 1,788.16
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Why These Related Problems?
These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.