Finding the Fourth Proportional to 310.87, 428.99 and 170.99
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Solution
The fourth proportional to 310.87, 428.99 and 170.99 is: 235.96
Step by Step Solution
- Step 1: Write the proportion equation
310.87 : 428.99 = 170.99 : x - Step 2: Convert to fraction form
310.87/428.99 = 170.99/x - Step 3: Cross multiply
310.87x = 428.99 × 170.99 - Step 4: Simplify right side
310.87x = 73,353.00 - Step 5: Solve for x
x = 73,353.00/310.87 - Step 6: Final answer
x = 235.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.