Finding the Fourth Proportional to 239.80, 330.67 and 177.75
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Solution
The fourth proportional to 239.80, 330.67 and 177.75 is: 245.10
Step by Step Solution
- Step 1: Write the proportion equation
239.80 : 330.67 = 177.75 : x - Step 2: Convert to fraction form
239.80/330.67 = 177.75/x - Step 3: Cross multiply
239.80x = 330.67 × 177.75 - Step 4: Simplify right side
239.80x = 58,774.05 - Step 5: Solve for x
x = 58,774.05/239.80 - Step 6: Final answer
x = 245.10
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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.