Finding the Fourth Proportional to 201.81, 302.99 and 185.70
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Solution
The fourth proportional to 201.81, 302.99 and 185.70 is: 278.80
Step by Step Solution
- Step 1: Write the proportion equation
201.81 : 302.99 = 185.70 : x - Step 2: Convert to fraction form
201.81/302.99 = 185.70/x - Step 3: Cross multiply
201.81x = 302.99 × 185.70 - Step 4: Simplify right side
201.81x = 56,264.31 - Step 5: Solve for x
x = 56,264.31/201.81 - Step 6: Final answer
x = 278.80
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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.