Finding the Fourth Proportional to 189.15, 260.76 and 159.99
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Solution
The fourth proportional to 189.15, 260.76 and 159.99 is: 220.56
Step by Step Solution
- Step 1: Write the proportion equation
189.15 : 260.76 = 159.99 : x - Step 2: Convert to fraction form
189.15/260.76 = 159.99/x - Step 3: Cross multiply
189.15x = 260.76 × 159.99 - Step 4: Simplify right side
189.15x = 41,718.99 - Step 5: Solve for x
x = 41,718.99/189.15 - Step 6: Final answer
x = 220.56
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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.