Finding the Fourth Proportional to 314.49, 471.89 and 141.28
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Solution
The fourth proportional to 314.49, 471.89 and 141.28 is: 211.99
Step by Step Solution
- Step 1: Write the proportion equation
314.49 : 471.89 = 141.28 : x - Step 2: Convert to fraction form
314.49/471.89 = 141.28/x - Step 3: Cross multiply
314.49x = 471.89 × 141.28 - Step 4: Simplify right side
314.49x = 66,667.00 - Step 5: Solve for x
x = 66,667.00/314.49 - Step 6: Final answer
x = 211.99
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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.