Finding the Fourth Proportional to 281.25, 421.58 and 135.08
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Solution
The fourth proportional to 281.25, 421.58 and 135.08 is: 202.47
Step by Step Solution
- Step 1: Write the proportion equation
281.25 : 421.58 = 135.08 : x - Step 2: Convert to fraction form
281.25/421.58 = 135.08/x - Step 3: Cross multiply
281.25x = 421.58 × 135.08 - Step 4: Simplify right side
281.25x = 56,944.24 - Step 5: Solve for x
x = 56,944.24/281.25 - Step 6: Final answer
x = 202.47
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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.