Finding the Fourth Proportional to 385.84, 531.69 and 274.99
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Solution
The fourth proportional to 385.84, 531.69 and 274.99 is: 378.94
Step by Step Solution
- Step 1: Write the proportion equation
385.84 : 531.69 = 274.99 : x - Step 2: Convert to fraction form
385.84/531.69 = 274.99/x - Step 3: Cross multiply
385.84x = 531.69 × 274.99 - Step 4: Simplify right side
385.84x = 146,209.43 - Step 5: Solve for x
x = 146,209.43/385.84 - Step 6: Final answer
x = 378.94
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.