Finding the Fourth Proportional to 214.58, 319.99 and 212.63
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Solution
The fourth proportional to 214.58, 319.99 and 212.63 is: 317.08
Step by Step Solution
- Step 1: Write the proportion equation
214.58 : 319.99 = 212.63 : x - Step 2: Convert to fraction form
214.58/319.99 = 212.63/x - Step 3: Cross multiply
214.58x = 319.99 × 212.63 - Step 4: Simplify right side
214.58x = 68,038.41 - Step 5: Solve for x
x = 68,038.41/214.58 - Step 6: Final answer
x = 317.08
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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.