Finding the Third Proportional to 90.25 and 109
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Solution
The third proportional to 90.25 and 109 is: 131.65
Step by Step Solution
- Step 1: Write the proportion equation
90.25 : 109 = 109 : x - Step 2: Convert to fraction form
90.25/109 = 109/x - Step 3: Cross multiply
90.25x = 109 × 109 - Step 4: Simplify right side
90.25x = 11,881 - Step 5: Solve for x
x = 11,881/90.25 - Step 6: Final answer
x = 131.65
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Why These Related Problems?
These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.