Finding the Fourth Proportional to 243.80, 336.08 and 202.28
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Solution
The fourth proportional to 243.80, 336.08 and 202.28 is: 278.84
Step by Step Solution
- Step 1: Write the proportion equation
243.80 : 336.08 = 202.28 : x - Step 2: Convert to fraction form
243.80/336.08 = 202.28/x - Step 3: Cross multiply
243.80x = 336.08 × 202.28 - Step 4: Simplify right side
243.80x = 67,982.26 - Step 5: Solve for x
x = 67,982.26/243.80 - Step 6: Final answer
x = 278.84
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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.