Finding the Fourth Proportional to 153.94, 230.99 and 76.96
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Solution
The fourth proportional to 153.94, 230.99 and 76.96 is: 115.48
Step by Step Solution
- Step 1: Write the proportion equation
153.94 : 230.99 = 76.96 : x - Step 2: Convert to fraction form
153.94/230.99 = 76.96/x - Step 3: Cross multiply
153.94x = 230.99 × 76.96 - Step 4: Simplify right side
153.94x = 17,776.99 - Step 5: Solve for x
x = 17,776.99/153.94 - Step 6: Final answer
x = 115.48
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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.