Finding the Fourth Proportional to 87.19, 130.55 and 73.44
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Solution
The fourth proportional to 87.19, 130.55 and 73.44 is: 109.96
Step by Step Solution
- Step 1: Write the proportion equation
87.19 : 130.55 = 73.44 : x - Step 2: Convert to fraction form
87.19/130.55 = 73.44/x - Step 3: Cross multiply
87.19x = 130.55 × 73.44 - Step 4: Simplify right side
87.19x = 9,587.22 - Step 5: Solve for x
x = 9,587.22/87.19 - Step 6: Final answer
x = 109.96
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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.