Finding the Fourth Proportional to 409.08, 613.70 and 135.19
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Solution
The fourth proportional to 409.08, 613.70 and 135.19 is: 202.81
Step by Step Solution
- Step 1: Write the proportion equation
409.08 : 613.70 = 135.19 : x - Step 2: Convert to fraction form
409.08/613.70 = 135.19/x - Step 3: Cross multiply
409.08x = 613.70 × 135.19 - Step 4: Simplify right side
409.08x = 82,966.10 - Step 5: Solve for x
x = 82,966.10/409.08 - Step 6: Final answer
x = 202.81
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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.