Finding the Fourth Proportional to 52.10, 71.86 and 38.99
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Solution
The fourth proportional to 52.10, 71.86 and 38.99 is: 53.77
Step by Step Solution
- Step 1: Write the proportion equation
52.10 : 71.86 = 38.99 : x - Step 2: Convert to fraction form
52.10/71.86 = 38.99/x - Step 3: Cross multiply
52.10x = 71.86 × 38.99 - Step 4: Simplify right side
52.10x = 2,801.27 - Step 5: Solve for x
x = 2,801.27/52.10 - Step 6: Final answer
x = 53.77
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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.