Finding the Fourth Proportional to 387.05, 533.79 and 254.26
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Solution
The fourth proportional to 387.05, 533.79 and 254.26 is: 350.65
Step by Step Solution
- Step 1: Write the proportion equation
387.05 : 533.79 = 254.26 : x - Step 2: Convert to fraction form
387.05/533.79 = 254.26/x - Step 3: Cross multiply
387.05x = 533.79 × 254.26 - Step 4: Simplify right side
387.05x = 135,719.11 - Step 5: Solve for x
x = 135,719.11/387.05 - Step 6: Final answer
x = 350.65
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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.