Finding the Fourth Proportional to 381.17, 571.08 and 258.99
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Solution
The fourth proportional to 381.17, 571.08 and 258.99 is: 388.03
Step by Step Solution
- Step 1: Write the proportion equation
381.17 : 571.08 = 258.99 : x - Step 2: Convert to fraction form
381.17/571.08 = 258.99/x - Step 3: Cross multiply
381.17x = 571.08 × 258.99 - Step 4: Simplify right side
381.17x = 147,904.01 - Step 5: Solve for x
x = 147,904.01/381.17 - Step 6: Final answer
x = 388.03
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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.