Finding the Fourth Proportional to 266.81, 398.31 and 254.99
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Solution
The fourth proportional to 266.81, 398.31 and 254.99 is: 380.66
Step by Step Solution
- Step 1: Write the proportion equation
266.81 : 398.31 = 254.99 : x - Step 2: Convert to fraction form
266.81/398.31 = 254.99/x - Step 3: Cross multiply
266.81x = 398.31 × 254.99 - Step 4: Simplify right side
266.81x = 101,563.79 - Step 5: Solve for x
x = 101,563.79/266.81 - Step 6: Final answer
x = 380.66
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.