Finding the Fourth Proportional to 135.78, 203.69 and 44.47
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Solution
The fourth proportional to 135.78, 203.69 and 44.47 is: 66.71
Step by Step Solution
- Step 1: Write the proportion equation
135.78 : 203.69 = 44.47 : x - Step 2: Convert to fraction form
135.78/203.69 = 44.47/x - Step 3: Cross multiply
135.78x = 203.69 × 44.47 - Step 4: Simplify right side
135.78x = 9,058.24 - Step 5: Solve for x
x = 9,058.24/135.78 - Step 6: Final answer
x = 66.71
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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.