Finding the Fourth Proportional to 153.99, 230.70 and 108.12
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Solution
The fourth proportional to 153.99, 230.70 and 108.12 is: 161.98
Step by Step Solution
- Step 1: Write the proportion equation
153.99 : 230.70 = 108.12 : x - Step 2: Convert to fraction form
153.99/230.70 = 108.12/x - Step 3: Cross multiply
153.99x = 230.70 × 108.12 - Step 4: Simplify right side
153.99x = 24,943.28 - Step 5: Solve for x
x = 24,943.28/153.99 - Step 6: Final answer
x = 161.98
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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.