Finding the Fourth Proportional to 127.99, 191.97 and 76.99
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Solution
The fourth proportional to 127.99, 191.97 and 76.99 is: 115.48
Step by Step Solution
- Step 1: Write the proportion equation
127.99 : 191.97 = 76.99 : x - Step 2: Convert to fraction form
127.99/191.97 = 76.99/x - Step 3: Cross multiply
127.99x = 191.97 × 76.99 - Step 4: Simplify right side
127.99x = 14,779.77 - Step 5: Solve for x
x = 14,779.77/127.99 - Step 6: Final answer
x = 115.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.