Finding the Fourth Proportional to 74.24, 102.36 and 58.68
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Solution
The fourth proportional to 74.24, 102.36 and 58.68 is: 80.91
Step by Step Solution
- Step 1: Write the proportion equation
74.24 : 102.36 = 58.68 : x - Step 2: Convert to fraction form
74.24/102.36 = 58.68/x - Step 3: Cross multiply
74.24x = 102.36 × 58.68 - Step 4: Simplify right side
74.24x = 6,006.48 - Step 5: Solve for x
x = 6,006.48/74.24 - Step 6: Final answer
x = 80.91
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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.