Finding the Fourth Proportional to 127.23, 175.59 and 71.99
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Solution
The fourth proportional to 127.23, 175.59 and 71.99 is: 99.35
Step by Step Solution
- Step 1: Write the proportion equation
127.23 : 175.59 = 71.99 : x - Step 2: Convert to fraction form
127.23/175.59 = 71.99/x - Step 3: Cross multiply
127.23x = 175.59 × 71.99 - Step 4: Simplify right side
127.23x = 12,639.58 - Step 5: Solve for x
x = 12,639.58/127.23 - Step 6: Final answer
x = 99.35
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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.