Finding the Fourth Proportional to 47.42, 65.40 and 29.00
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Solution
The fourth proportional to 47.42, 65.40 and 29.00 is: 39.99
Step by Step Solution
- Step 1: Write the proportion equation
47.42 : 65.40 = 29.00 : x - Step 2: Convert to fraction form
47.42/65.40 = 29.00/x - Step 3: Cross multiply
47.42x = 65.40 × 29.00 - Step 4: Simplify right side
47.42x = 1,896.27 - Step 5: Solve for x
x = 1,896.27/47.42 - Step 6: Final answer
x = 39.99
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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.