Finding the Fourth Proportional to 286.62, 430.17 and 217.99
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Solution
The fourth proportional to 286.62, 430.17 and 217.99 is: 327.17
Step by Step Solution
- Step 1: Write the proportion equation
286.62 : 430.17 = 217.99 : x - Step 2: Convert to fraction form
286.62/430.17 = 217.99/x - Step 3: Cross multiply
286.62x = 430.17 × 217.99 - Step 4: Simplify right side
286.62x = 93,772.76 - Step 5: Solve for x
x = 93,772.76/286.62 - Step 6: Final answer
x = 327.17
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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.