Finding the Fourth Proportional to 316.24, 474.42 and 142.99
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Solution
The fourth proportional to 316.24, 474.42 and 142.99 is: 214.51
Step by Step Solution
- Step 1: Write the proportion equation
316.24 : 474.42 = 142.99 : x - Step 2: Convert to fraction form
316.24/474.42 = 142.99/x - Step 3: Cross multiply
316.24x = 474.42 × 142.99 - Step 4: Simplify right side
316.24x = 67,837.97 - Step 5: Solve for x
x = 67,837.97/316.24 - Step 6: Final answer
x = 214.51
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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.