Finding the Fourth Proportional to 40.99, 61.45 and 15.31
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Solution
The fourth proportional to 40.99, 61.45 and 15.31 is: 22.95
Step by Step Solution
- Step 1: Write the proportion equation
40.99 : 61.45 = 15.31 : x - Step 2: Convert to fraction form
40.99/61.45 = 15.31/x - Step 3: Cross multiply
40.99x = 61.45 × 15.31 - Step 4: Simplify right side
40.99x = 940.80 - Step 5: Solve for x
x = 940.80/40.99 - Step 6: Final answer
x = 22.95
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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.