Finding the Fourth Proportional to 319.08, 478.08 and 197.08
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Solution
The fourth proportional to 319.08, 478.08 and 197.08 is: 295.29
Step by Step Solution
- Step 1: Write the proportion equation
319.08 : 478.08 = 197.08 : x - Step 2: Convert to fraction form
319.08/478.08 = 197.08/x - Step 3: Cross multiply
319.08x = 478.08 × 197.08 - Step 4: Simplify right side
319.08x = 94,220.01 - Step 5: Solve for x
x = 94,220.01/319.08 - Step 6: Final answer
x = 295.29
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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.