Finding the Fourth Proportional to 135.52, 203.14 and 74.60
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Solution
The fourth proportional to 135.52, 203.14 and 74.60 is: 111.82
Step by Step Solution
- Step 1: Write the proportion equation
135.52 : 203.14 = 74.60 : x - Step 2: Convert to fraction form
135.52/203.14 = 74.60/x - Step 3: Cross multiply
135.52x = 203.14 × 74.60 - Step 4: Simplify right side
135.52x = 15,154.24 - Step 5: Solve for x
x = 15,154.24/135.52 - Step 6: Final answer
x = 111.82
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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.