Finding the Fourth Proportional to 133.49, 183.78 and 126.99
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Solution
The fourth proportional to 133.49, 183.78 and 126.99 is: 174.83
Step by Step Solution
- Step 1: Write the proportion equation
133.49 : 183.78 = 126.99 : x - Step 2: Convert to fraction form
133.49/183.78 = 126.99/x - Step 3: Cross multiply
133.49x = 183.78 × 126.99 - Step 4: Simplify right side
133.49x = 23,338.22 - Step 5: Solve for x
x = 23,338.22/133.49 - Step 6: Final answer
x = 174.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.