Finding the Fourth Proportional to 381.18, 570.99 and 226.65
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Solution
The fourth proportional to 381.18, 570.99 and 226.65 is: 339.51
Step by Step Solution
- Step 1: Write the proportion equation
381.18 : 570.99 = 226.65 : x - Step 2: Convert to fraction form
381.18/570.99 = 226.65/x - Step 3: Cross multiply
381.18x = 570.99 × 226.65 - Step 4: Simplify right side
381.18x = 129,414.88 - Step 5: Solve for x
x = 129,414.88/381.18 - Step 6: Final answer
x = 339.51
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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.