Finding the Fourth Proportional to 254.40, 379.18 and 253.99
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Solution
The fourth proportional to 254.40, 379.18 and 253.99 is: 378.57
Step by Step Solution
- Step 1: Write the proportion equation
254.40 : 379.18 = 253.99 : x - Step 2: Convert to fraction form
254.40/379.18 = 253.99/x - Step 3: Cross multiply
254.40x = 379.18 × 253.99 - Step 4: Simplify right side
254.40x = 96,307.93 - Step 5: Solve for x
x = 96,307.93/254.40 - Step 6: Final answer
x = 378.57
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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.