Finding the Fourth Proportional to 253.97, 378.99 and 228.12
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Solution
The fourth proportional to 253.97, 378.99 and 228.12 is: 340.42
Step by Step Solution
- Step 1: Write the proportion equation
253.97 : 378.99 = 228.12 : x - Step 2: Convert to fraction form
253.97/378.99 = 228.12/x - Step 3: Cross multiply
253.97x = 378.99 × 228.12 - Step 4: Simplify right side
253.97x = 86,455.20 - Step 5: Solve for x
x = 86,455.20/253.97 - Step 6: Final answer
x = 340.42
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.