Finding the Fourth Proportional to 189.84, 261.18 and 167.62
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Solution
The fourth proportional to 189.84, 261.18 and 167.62 is: 230.61
Step by Step Solution
- Step 1: Write the proportion equation
189.84 : 261.18 = 167.62 : x - Step 2: Convert to fraction form
189.84/261.18 = 167.62/x - Step 3: Cross multiply
189.84x = 261.18 × 167.62 - Step 4: Simplify right side
189.84x = 43,778.99 - Step 5: Solve for x
x = 43,778.99/189.84 - Step 6: Final answer
x = 230.61
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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.