Finding the Fourth Proportional to 42.21, 63.35 and 27.02
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Solution
The fourth proportional to 42.21, 63.35 and 27.02 is: 40.55
Step by Step Solution
- Step 1: Write the proportion equation
42.21 : 63.35 = 27.02 : x - Step 2: Convert to fraction form
42.21/63.35 = 27.02/x - Step 3: Cross multiply
42.21x = 63.35 × 27.02 - Step 4: Simplify right side
42.21x = 1,711.72 - Step 5: Solve for x
x = 1,711.72/42.21 - Step 6: Final answer
x = 40.55
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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.