Finding the Fourth Proportional to 378.68, 567.81 and 135.07
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Solution
The fourth proportional to 378.68, 567.81 and 135.07 is: 202.53
Step by Step Solution
- Step 1: Write the proportion equation
378.68 : 567.81 = 135.07 : x - Step 2: Convert to fraction form
378.68/567.81 = 135.07/x - Step 3: Cross multiply
378.68x = 567.81 × 135.07 - Step 4: Simplify right side
378.68x = 76,692.68 - Step 5: Solve for x
x = 76,692.68/378.68 - Step 6: Final answer
x = 202.53
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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.