Finding the Fourth Proportional to 193.12, 289.36 and 84.64
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Solution
The fourth proportional to 193.12, 289.36 and 84.64 is: 126.82
Step by Step Solution
- Step 1: Write the proportion equation
193.12 : 289.36 = 84.64 : x - Step 2: Convert to fraction form
193.12/289.36 = 84.64/x - Step 3: Cross multiply
193.12x = 289.36 × 84.64 - Step 4: Simplify right side
193.12x = 24,491.43 - Step 5: Solve for x
x = 24,491.43/193.12 - Step 6: Final answer
x = 126.82
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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.