Finding the Fourth Proportional to 79.43, 119.12 and 54.99
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Solution
The fourth proportional to 79.43, 119.12 and 54.99 is: 82.47
Step by Step Solution
- Step 1: Write the proportion equation
79.43 : 119.12 = 54.99 : x - Step 2: Convert to fraction form
79.43/119.12 = 54.99/x - Step 3: Cross multiply
79.43x = 119.12 × 54.99 - Step 4: Simplify right side
79.43x = 6,550.13 - Step 5: Solve for x
x = 6,550.13/79.43 - Step 6: Final answer
x = 82.47
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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.