Finding the Fourth Proportional to 319.44, 478.98 and 157.08
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Solution
The fourth proportional to 319.44, 478.98 and 157.08 is: 235.53
Step by Step Solution
- Step 1: Write the proportion equation
319.44 : 478.98 = 157.08 : x - Step 2: Convert to fraction form
319.44/478.98 = 157.08/x - Step 3: Cross multiply
319.44x = 478.98 × 157.08 - Step 4: Simplify right side
319.44x = 75,238.18 - Step 5: Solve for x
x = 75,238.18/319.44 - Step 6: Final answer
x = 235.53
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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.