Finding the Fourth Proportional to 127.74, 191.49 and 46.53
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Solution
The fourth proportional to 127.74, 191.49 and 46.53 is: 69.75
Step by Step Solution
- Step 1: Write the proportion equation
127.74 : 191.49 = 46.53 : x - Step 2: Convert to fraction form
127.74/191.49 = 46.53/x - Step 3: Cross multiply
127.74x = 191.49 × 46.53 - Step 4: Simplify right side
127.74x = 8,910.03 - Step 5: Solve for x
x = 8,910.03/127.74 - Step 6: Final answer
x = 69.75
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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.