Finding the Fourth Proportional to 79.97, 119.62 and 68.97
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Solution
The fourth proportional to 79.97, 119.62 and 68.97 is: 103.17
Step by Step Solution
- Step 1: Write the proportion equation
79.97 : 119.62 = 68.97 : x - Step 2: Convert to fraction form
79.97/119.62 = 68.97/x - Step 3: Cross multiply
79.97x = 119.62 × 68.97 - Step 4: Simplify right side
79.97x = 8,250.19 - Step 5: Solve for x
x = 8,250.19/79.97 - Step 6: Final answer
x = 103.17
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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.