Finding the Fourth Proportional to 331.45, 456.87 and 232.99
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Solution
The fourth proportional to 331.45, 456.87 and 232.99 is: 321.15
Step by Step Solution
- Step 1: Write the proportion equation
331.45 : 456.87 = 232.99 : x - Step 2: Convert to fraction form
331.45/456.87 = 232.99/x - Step 3: Cross multiply
331.45x = 456.87 × 232.99 - Step 4: Simplify right side
331.45x = 106,446.14 - Step 5: Solve for x
x = 106,446.14/331.45 - Step 6: Final answer
x = 321.15
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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.