Finding the Fourth Proportional to 201.32, 277.80 and 113.99
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Solution
The fourth proportional to 201.32, 277.80 and 113.99 is: 157.29
Step by Step Solution
- Step 1: Write the proportion equation
201.32 : 277.80 = 113.99 : x - Step 2: Convert to fraction form
201.32/277.80 = 113.99/x - Step 3: Cross multiply
201.32x = 277.80 × 113.99 - Step 4: Simplify right side
201.32x = 31,666.42 - Step 5: Solve for x
x = 31,666.42/201.32 - Step 6: Final answer
x = 157.29
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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.