Finding the Fourth Proportional to 358.36, 536.96 and 221.12
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Solution
The fourth proportional to 358.36, 536.96 and 221.12 is: 331.32
Step by Step Solution
- Step 1: Write the proportion equation
358.36 : 536.96 = 221.12 : x - Step 2: Convert to fraction form
358.36/536.96 = 221.12/x - Step 3: Cross multiply
358.36x = 536.96 × 221.12 - Step 4: Simplify right side
358.36x = 118,732.60 - Step 5: Solve for x
x = 118,732.60/358.36 - Step 6: Final answer
x = 331.32
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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.