Finding the Fourth Proportional to 163.78, 225.88 and 98.28
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Solution
The fourth proportional to 163.78, 225.88 and 98.28 is: 135.55
Step by Step Solution
- Step 1: Write the proportion equation
163.78 : 225.88 = 98.28 : x - Step 2: Convert to fraction form
163.78/225.88 = 98.28/x - Step 3: Cross multiply
163.78x = 225.88 × 98.28 - Step 4: Simplify right side
163.78x = 22,199.24 - Step 5: Solve for x
x = 22,199.24/163.78 - Step 6: Final answer
x = 135.55
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.