Finding the Fourth Proportional to 13.34, 19.99 and 5.31
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Solution
The fourth proportional to 13.34, 19.99 and 5.31 is: 7.96
Step by Step Solution
- Step 1: Write the proportion equation
13.34 : 19.99 = 5.31 : x - Step 2: Convert to fraction form
13.34/19.99 = 5.31/x - Step 3: Cross multiply
13.34x = 19.99 × 5.31 - Step 4: Simplify right side
13.34x = 106.15 - Step 5: Solve for x
x = 106.15/13.34 - Step 6: Final answer
x = 7.96
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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.