Finding the Fourth Proportional to 135.30, 202.95 and 91.28
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Solution
The fourth proportional to 135.30, 202.95 and 91.28 is: 136.91
Step by Step Solution
- Step 1: Write the proportion equation
135.30 : 202.95 = 91.28 : x - Step 2: Convert to fraction form
135.30/202.95 = 91.28/x - Step 3: Cross multiply
135.30x = 202.95 × 91.28 - Step 4: Simplify right side
135.30x = 18,524.26 - Step 5: Solve for x
x = 18,524.26/135.30 - Step 6: Final answer
x = 136.91
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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.