Finding the Fourth Proportional to 378.08, 521.13 and 299.26
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Solution
The fourth proportional to 378.08, 521.13 and 299.26 is: 412.49
Step by Step Solution
- Step 1: Write the proportion equation
378.08 : 521.13 = 299.26 : x - Step 2: Convert to fraction form
378.08/521.13 = 299.26/x - Step 3: Cross multiply
378.08x = 521.13 × 299.26 - Step 4: Simplify right side
378.08x = 155,955.14 - Step 5: Solve for x
x = 155,955.14/378.08 - Step 6: Final answer
x = 412.49
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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.