Finding the Fourth Proportional to 193.18, 289.53 and 84.74
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Solution
The fourth proportional to 193.18, 289.53 and 84.74 is: 127.01
Step by Step Solution
- Step 1: Write the proportion equation
193.18 : 289.53 = 84.74 : x - Step 2: Convert to fraction form
193.18/289.53 = 84.74/x - Step 3: Cross multiply
193.18x = 289.53 × 84.74 - Step 4: Simplify right side
193.18x = 24,534.77 - Step 5: Solve for x
x = 24,534.77/193.18 - Step 6: Final answer
x = 127.01
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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.