Finding the Fourth Proportional to 231.18, 346.68 and 122.91
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Solution
The fourth proportional to 231.18, 346.68 and 122.91 is: 184.32
Step by Step Solution
- Step 1: Write the proportion equation
231.18 : 346.68 = 122.91 : x - Step 2: Convert to fraction form
231.18/346.68 = 122.91/x - Step 3: Cross multiply
231.18x = 346.68 × 122.91 - Step 4: Simplify right side
231.18x = 42,610.44 - Step 5: Solve for x
x = 42,610.44/231.18 - Step 6: Final answer
x = 184.32
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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.