Finding the Fourth Proportional to 382.81, 572.94 and 290.99
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Solution
The fourth proportional to 382.81, 572.94 and 290.99 is: 435.52
Step by Step Solution
- Step 1: Write the proportion equation
382.81 : 572.94 = 290.99 : x - Step 2: Convert to fraction form
382.81/572.94 = 290.99/x - Step 3: Cross multiply
382.81x = 572.94 × 290.99 - Step 4: Simplify right side
382.81x = 166,721.24 - Step 5: Solve for x
x = 166,721.24/382.81 - Step 6: Final answer
x = 435.52
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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.