Finding the Fourth Proportional to 153.20, 229.88 and 84.68
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Solution
The fourth proportional to 153.20, 229.88 and 84.68 is: 127.06
Step by Step Solution
- Step 1: Write the proportion equation
153.20 : 229.88 = 84.68 : x - Step 2: Convert to fraction form
153.20/229.88 = 84.68/x - Step 3: Cross multiply
153.20x = 229.88 × 84.68 - Step 4: Simplify right side
153.20x = 19,466.24 - Step 5: Solve for x
x = 19,466.24/153.20 - Step 6: Final answer
x = 127.06
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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.