Finding the Fourth Proportional to 378.36, 568.14 and 305.48
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Solution
The fourth proportional to 378.36, 568.14 and 305.48 is: 458.70
Step by Step Solution
- Step 1: Write the proportion equation
378.36 : 568.14 = 305.48 : x - Step 2: Convert to fraction form
378.36/568.14 = 305.48/x - Step 3: Cross multiply
378.36x = 568.14 × 305.48 - Step 4: Simplify right side
378.36x = 173,555.41 - Step 5: Solve for x
x = 173,555.41/378.36 - Step 6: Final answer
x = 458.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.