Finding the Fourth Proportional to 254.99, 351.88 and 138.55
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Solution
The fourth proportional to 254.99, 351.88 and 138.55 is: 191.20
Step by Step Solution
- Step 1: Write the proportion equation
254.99 : 351.88 = 138.55 : x - Step 2: Convert to fraction form
254.99/351.88 = 138.55/x - Step 3: Cross multiply
254.99x = 351.88 × 138.55 - Step 4: Simplify right side
254.99x = 48,752.97 - Step 5: Solve for x
x = 48,752.97/254.99 - Step 6: Final answer
x = 191.20
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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.