Finding the Fourth Proportional to 221.19, 331.74 and 58.88
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Solution
The fourth proportional to 221.19, 331.74 and 58.88 is: 88.31
Step by Step Solution
- Step 1: Write the proportion equation
221.19 : 331.74 = 58.88 : x - Step 2: Convert to fraction form
221.19/331.74 = 58.88/x - Step 3: Cross multiply
221.19x = 331.74 × 58.88 - Step 4: Simplify right side
221.19x = 19,533.68 - Step 5: Solve for x
x = 19,533.68/221.19 - Step 6: Final answer
x = 88.31
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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.