Finding the Fourth Proportional to 110.97, 153.29 and 79.99
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Solution
The fourth proportional to 110.97, 153.29 and 79.99 is: 110.49
Step by Step Solution
- Step 1: Write the proportion equation
110.97 : 153.29 = 79.99 : x - Step 2: Convert to fraction form
110.97/153.29 = 79.99/x - Step 3: Cross multiply
110.97x = 153.29 × 79.99 - Step 4: Simplify right side
110.97x = 12,261.48 - Step 5: Solve for x
x = 12,261.48/110.97 - Step 6: Final answer
x = 110.49
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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.