Finding the Fourth Proportional to 40.43, 55.76 and 29.99
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Solution
The fourth proportional to 40.43, 55.76 and 29.99 is: 41.36
Step by Step Solution
- Step 1: Write the proportion equation
40.43 : 55.76 = 29.99 : x - Step 2: Convert to fraction form
40.43/55.76 = 29.99/x - Step 3: Cross multiply
40.43x = 55.76 × 29.99 - Step 4: Simplify right side
40.43x = 1,672.23 - Step 5: Solve for x
x = 1,672.23/40.43 - Step 6: Final answer
x = 41.36
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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.