Finding the Fourth Proportional to 74.37, 102.36 and 57.99
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Solution
The fourth proportional to 74.37, 102.36 and 57.99 is: 79.82
Step by Step Solution
- Step 1: Write the proportion equation
74.37 : 102.36 = 57.99 : x - Step 2: Convert to fraction form
74.37/102.36 = 57.99/x - Step 3: Cross multiply
74.37x = 102.36 × 57.99 - Step 4: Simplify right side
74.37x = 5,935.86 - Step 5: Solve for x
x = 5,935.86/74.37 - Step 6: Final answer
x = 79.82
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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.