Finding the Fourth Proportional to 202.44, 279.39 and 115.12
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Solution
The fourth proportional to 202.44, 279.39 and 115.12 is: 158.88
Step by Step Solution
- Step 1: Write the proportion equation
202.44 : 279.39 = 115.12 : x - Step 2: Convert to fraction form
202.44/279.39 = 115.12/x - Step 3: Cross multiply
202.44x = 279.39 × 115.12 - Step 4: Simplify right side
202.44x = 32,163.38 - Step 5: Solve for x
x = 32,163.38/202.44 - Step 6: Final answer
x = 158.88
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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.