Finding the Fourth Proportional to 331.44, 497.09 and 115.08
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Solution
The fourth proportional to 331.44, 497.09 and 115.08 is: 172.59
Step by Step Solution
- Step 1: Write the proportion equation
331.44 : 497.09 = 115.08 : x - Step 2: Convert to fraction form
331.44/497.09 = 115.08/x - Step 3: Cross multiply
331.44x = 497.09 × 115.08 - Step 4: Simplify right side
331.44x = 57,202.06 - Step 5: Solve for x
x = 57,202.06/331.44 - Step 6: Final answer
x = 172.59
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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.