Finding the Fourth Proportional to 95.78, 132.08 and 74.99
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Solution
The fourth proportional to 95.78, 132.08 and 74.99 is: 103.41
Step by Step Solution
- Step 1: Write the proportion equation
95.78 : 132.08 = 74.99 : x - Step 2: Convert to fraction form
95.78/132.08 = 74.99/x - Step 3: Cross multiply
95.78x = 132.08 × 74.99 - Step 4: Simplify right side
95.78x = 9,903.64 - Step 5: Solve for x
x = 9,903.64/95.78 - Step 6: Final answer
x = 103.41
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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.