Finding the Fourth Proportional to 239.10, 330.14 and 221.63
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Solution
The fourth proportional to 239.10, 330.14 and 221.63 is: 306.01
Step by Step Solution
- Step 1: Write the proportion equation
239.10 : 330.14 = 221.63 : x - Step 2: Convert to fraction form
239.10/330.14 = 221.63/x - Step 3: Cross multiply
239.10x = 330.14 × 221.63 - Step 4: Simplify right side
239.10x = 73,166.17 - Step 5: Solve for x
x = 73,166.17/239.10 - Step 6: Final answer
x = 306.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.