Finding the Fourth Proportional to 145.09, 217.65 and 63.99
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Solution
The fourth proportional to 145.09, 217.65 and 63.99 is: 95.99
Step by Step Solution
- Step 1: Write the proportion equation
145.09 : 217.65 = 63.99 : x - Step 2: Convert to fraction form
145.09/217.65 = 63.99/x - Step 3: Cross multiply
145.09x = 217.65 × 63.99 - Step 4: Simplify right side
145.09x = 13,928.28 - Step 5: Solve for x
x = 13,928.28/145.09 - Step 6: Final answer
x = 95.99
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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.