Finding the Fourth Proportional to 319.08, 440.18 and 202.68
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Solution
The fourth proportional to 319.08, 440.18 and 202.68 is: 279.60
Step by Step Solution
- Step 1: Write the proportion equation
319.08 : 440.18 = 202.68 : x - Step 2: Convert to fraction form
319.08/440.18 = 202.68/x - Step 3: Cross multiply
319.08x = 440.18 × 202.68 - Step 4: Simplify right side
319.08x = 89,215.68 - Step 5: Solve for x
x = 89,215.68/319.08 - Step 6: Final answer
x = 279.60
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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.