Finding the Fourth Proportional to 163.84, 245.62 and 86.76
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Solution
The fourth proportional to 163.84, 245.62 and 86.76 is: 130.07
Step by Step Solution
- Step 1: Write the proportion equation
163.84 : 245.62 = 86.76 : x - Step 2: Convert to fraction form
163.84/245.62 = 86.76/x - Step 3: Cross multiply
163.84x = 245.62 × 86.76 - Step 4: Simplify right side
163.84x = 21,309.99 - Step 5: Solve for x
x = 21,309.99/163.84 - Step 6: Final answer
x = 130.07
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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.