Finding the Fourth Proportional to 295.70, 407.88 and 212.99
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Solution
The fourth proportional to 295.70, 407.88 and 212.99 is: 293.79
Step by Step Solution
- Step 1: Write the proportion equation
295.70 : 407.88 = 212.99 : x - Step 2: Convert to fraction form
295.70/407.88 = 212.99/x - Step 3: Cross multiply
295.70x = 407.88 × 212.99 - Step 4: Simplify right side
295.70x = 86,872.32 - Step 5: Solve for x
x = 86,872.32/295.70 - Step 6: Final answer
x = 293.79
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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.