Finding the Fourth Proportional to 199.99, 276.08 and 153.55
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Solution
The fourth proportional to 199.99, 276.08 and 153.55 is: 211.97
Step by Step Solution
- Step 1: Write the proportion equation
199.99 : 276.08 = 153.55 : x - Step 2: Convert to fraction form
199.99/276.08 = 153.55/x - Step 3: Cross multiply
199.99x = 276.08 × 153.55 - Step 4: Simplify right side
199.99x = 42,392.08 - Step 5: Solve for x
x = 42,392.08/199.99 - Step 6: Final answer
x = 211.97
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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.