Finding the Third Proportional to 19 and 49.31
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Solution
The third proportional to 19 and 49.31 is: 127.99
Step by Step Solution
- Step 1: Write the proportion equation
19 : 49.31 = 49.31 : x - Step 2: Convert to fraction form
19/49.31 = 49.31/x - Step 3: Cross multiply
19x = 49.31 × 49.31 - Step 4: Simplify right side
19x = 2,431.72 - Step 5: Solve for x
x = 2,431.72/19 - Step 6: Final answer
x = 127.99
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Why These Related Problems?
These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.