Finding the Fourth Proportional to 163.99, 245.84 and 86.91
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Solution
The fourth proportional to 163.99, 245.84 and 86.91 is: 130.28
Step by Step Solution
- Step 1: Write the proportion equation
163.99 : 245.84 = 86.91 : x - Step 2: Convert to fraction form
163.99/245.84 = 86.91/x - Step 3: Cross multiply
163.99x = 245.84 × 86.91 - Step 4: Simplify right side
163.99x = 21,364.60 - Step 5: Solve for x
x = 21,364.60/163.99 - Step 6: Final answer
x = 130.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.