Finding the Fourth Proportional to 7.60, 10.47 and 6.99
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Solution
The fourth proportional to 7.60, 10.47 and 6.99 is: 9.63
Step by Step Solution
- Step 1: Write the proportion equation
7.60 : 10.47 = 6.99 : x - Step 2: Convert to fraction form
7.60/10.47 = 6.99/x - Step 3: Cross multiply
7.60x = 10.47 × 6.99 - Step 4: Simplify right side
7.60x = 73.19 - Step 5: Solve for x
x = 73.19/7.60 - Step 6: Final answer
x = 9.63
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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.