Finding the Fourth Proportional to 26.16, 36.08 and 20.68
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Solution
The fourth proportional to 26.16, 36.08 and 20.68 is: 28.52
Step by Step Solution
- Step 1: Write the proportion equation
26.16 : 36.08 = 20.68 : x - Step 2: Convert to fraction form
26.16/36.08 = 20.68/x - Step 3: Cross multiply
26.16x = 36.08 × 20.68 - Step 4: Simplify right side
26.16x = 746.13 - Step 5: Solve for x
x = 746.13/26.16 - Step 6: Final answer
x = 28.52
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1.5x scale
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.