Finding the Fourth Proportional to 189.44, 283.64 and 143.99
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Solution
The fourth proportional to 189.44, 283.64 and 143.99 is: 215.58
Step by Step Solution
- Step 1: Write the proportion equation
189.44 : 283.64 = 143.99 : x - Step 2: Convert to fraction form
189.44/283.64 = 143.99/x - Step 3: Cross multiply
189.44x = 283.64 × 143.99 - Step 4: Simplify right side
189.44x = 40,839.19 - Step 5: Solve for x
x = 40,839.19/189.44 - Step 6: Final answer
x = 215.58
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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.