Finding the Fourth Proportional to 221.29, 331.91 and 58.99
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Solution
The fourth proportional to 221.29, 331.91 and 58.99 is: 88.47
Step by Step Solution
- Step 1: Write the proportion equation
221.29 : 331.91 = 58.99 : x - Step 2: Convert to fraction form
221.29/331.91 = 58.99/x - Step 3: Cross multiply
221.29x = 331.91 × 58.99 - Step 4: Simplify right side
221.29x = 19,577.42 - Step 5: Solve for x
x = 19,577.42/221.29 - Step 6: Final answer
x = 88.47
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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.