Finding the Fourth Proportional to 162.08, 243.12 and 53.88
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Solution
The fourth proportional to 162.08, 243.12 and 53.88 is: 80.82
Step by Step Solution
- Step 1: Write the proportion equation
162.08 : 243.12 = 53.88 : x - Step 2: Convert to fraction form
162.08/243.12 = 53.88/x - Step 3: Cross multiply
162.08x = 243.12 × 53.88 - Step 4: Simplify right side
162.08x = 13,099.31 - Step 5: Solve for x
x = 13,099.31/162.08 - Step 6: Final answer
x = 80.82
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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.