Finding the Fourth Proportional to 47.46, 65.50 and 42.02
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Solution
The fourth proportional to 47.46, 65.50 and 42.02 is: 57.99
Step by Step Solution
- Step 1: Write the proportion equation
47.46 : 65.50 = 42.02 : x - Step 2: Convert to fraction form
47.46/65.50 = 42.02/x - Step 3: Cross multiply
47.46x = 65.50 × 42.02 - Step 4: Simplify right side
47.46x = 2,752.31 - Step 5: Solve for x
x = 2,752.31/47.46 - Step 6: Final answer
x = 57.99
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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.