Finding the Fourth Proportional to 71.06, 98.19 and 63.68
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Solution
The fourth proportional to 71.06, 98.19 and 63.68 is: 87.99
Step by Step Solution
- Step 1: Write the proportion equation
71.06 : 98.19 = 63.68 : x - Step 2: Convert to fraction form
71.06/98.19 = 63.68/x - Step 3: Cross multiply
71.06x = 98.19 × 63.68 - Step 4: Simplify right side
71.06x = 6,252.25 - Step 5: Solve for x
x = 6,252.25/71.06 - Step 6: Final answer
x = 87.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.