Finding the Fourth Proportional to 145.99, 201.44 and 80.49
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Solution
The fourth proportional to 145.99, 201.44 and 80.49 is: 111.07
Step by Step Solution
- Step 1: Write the proportion equation
145.99 : 201.44 = 80.49 : x - Step 2: Convert to fraction form
145.99/201.44 = 80.49/x - Step 3: Cross multiply
145.99x = 201.44 × 80.49 - Step 4: Simplify right side
145.99x = 16,214.64 - Step 5: Solve for x
x = 16,214.64/145.99 - Step 6: Final answer
x = 111.07
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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.