Finding the Fourth Proportional to 381.12, 571.84 and 207.91
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Solution
The fourth proportional to 381.12, 571.84 and 207.91 is: 311.95
Step by Step Solution
- Step 1: Write the proportion equation
381.12 : 571.84 = 207.91 : x - Step 2: Convert to fraction form
381.12/571.84 = 207.91/x - Step 3: Cross multiply
381.12x = 571.84 × 207.91 - Step 4: Simplify right side
381.12x = 118,891.25 - Step 5: Solve for x
x = 118,891.25/381.12 - Step 6: Final answer
x = 311.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.