Finding the Fourth Proportional to 144.72, 216.60 and 98.88
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Solution
The fourth proportional to 144.72, 216.60 and 98.88 is: 147.99
Step by Step Solution
- Step 1: Write the proportion equation
144.72 : 216.60 = 98.88 : x - Step 2: Convert to fraction form
144.72/216.60 = 98.88/x - Step 3: Cross multiply
144.72x = 216.60 × 98.88 - Step 4: Simplify right side
144.72x = 21,417.41 - Step 5: Solve for x
x = 21,417.41/144.72 - Step 6: Final answer
x = 147.99
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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.