Finding the Fourth Proportional to 331.25, 457.14 and 214.88
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Solution
The fourth proportional to 331.25, 457.14 and 214.88 is: 296.54
Step by Step Solution
- Step 1: Write the proportion equation
331.25 : 457.14 = 214.88 : x - Step 2: Convert to fraction form
331.25/457.14 = 214.88/x - Step 3: Cross multiply
331.25x = 457.14 × 214.88 - Step 4: Simplify right side
331.25x = 98,230.24 - Step 5: Solve for x
x = 98,230.24/331.25 - Step 6: Final answer
x = 296.54
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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.