Finding the Fourth Proportional to 10.79, 14.87 and 10.15
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Solution
The fourth proportional to 10.79, 14.87 and 10.15 is: 13.99
Step by Step Solution
- Step 1: Write the proportion equation
10.79 : 14.87 = 10.15 : x - Step 2: Convert to fraction form
10.79/14.87 = 10.15/x - Step 3: Cross multiply
10.79x = 14.87 × 10.15 - Step 4: Simplify right side
10.79x = 150.93 - Step 5: Solve for x
x = 150.93/10.79 - Step 6: Final answer
x = 13.99
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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.