Finding the Fourth Proportional to 574.49, 861.77 and 189.74
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Solution
The fourth proportional to 574.49, 861.77 and 189.74 is: 284.62
Step by Step Solution
- Step 1: Write the proportion equation
574.49 : 861.77 = 189.74 : x - Step 2: Convert to fraction form
574.49/861.77 = 189.74/x - Step 3: Cross multiply
574.49x = 861.77 × 189.74 - Step 4: Simplify right side
574.49x = 163,512.24 - Step 5: Solve for x
x = 163,512.24/574.49 - Step 6: Final answer
x = 284.62
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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.