Finding the Fourth Proportional to 79.01, 108.99 and 62.68
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Solution
The fourth proportional to 79.01, 108.99 and 62.68 is: 86.46
Step by Step Solution
- Step 1: Write the proportion equation
79.01 : 108.99 = 62.68 : x - Step 2: Convert to fraction form
79.01/108.99 = 62.68/x - Step 3: Cross multiply
79.01x = 108.99 × 62.68 - Step 4: Simplify right side
79.01x = 6,831.49 - Step 5: Solve for x
x = 6,831.49/79.01 - Step 6: Final answer
x = 86.46
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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.