Finding the Fourth Proportional to 120.98, 181.49 and 56.00
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Solution
The fourth proportional to 120.98, 181.49 and 56.00 is: 84.00
Step by Step Solution
- Step 1: Write the proportion equation
120.98 : 181.49 = 56.00 : x - Step 2: Convert to fraction form
120.98/181.49 = 56.00/x - Step 3: Cross multiply
120.98x = 181.49 × 56.00 - Step 4: Simplify right side
120.98x = 10,162.59 - Step 5: Solve for x
x = 10,162.59/120.98 - Step 6: Final answer
x = 84.00
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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.