Finding the Fourth Proportional to 438.24, 657.36 and 181.76
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Solution
The fourth proportional to 438.24, 657.36 and 181.76 is: 272.64
Step by Step Solution
- Step 1: Write the proportion equation
438.24 : 657.36 = 181.76 : x - Step 2: Convert to fraction form
438.24/657.36 = 181.76/x - Step 3: Cross multiply
438.24x = 657.36 × 181.76 - Step 4: Simplify right side
438.24x = 119,481.75 - Step 5: Solve for x
x = 119,481.75/438.24 - Step 6: Final answer
x = 272.64
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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.