Finding the Fourth Proportional to 300.30, 414.50 and 189.81
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Solution
The fourth proportional to 300.30, 414.50 and 189.81 is: 261.99
Step by Step Solution
- Step 1: Write the proportion equation
300.30 : 414.50 = 189.81 : x - Step 2: Convert to fraction form
300.30/414.50 = 189.81/x - Step 3: Cross multiply
300.30x = 414.50 × 189.81 - Step 4: Simplify right side
300.30x = 78,675.30 - Step 5: Solve for x
x = 78,675.30/300.30 - Step 6: Final answer
x = 261.99
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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.