Finding the Fourth Proportional to 58.78, 87.99 and 47.29
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Solution
The fourth proportional to 58.78, 87.99 and 47.29 is: 70.79
Step by Step Solution
- Step 1: Write the proportion equation
58.78 : 87.99 = 47.29 : x - Step 2: Convert to fraction form
58.78/87.99 = 47.29/x - Step 3: Cross multiply
58.78x = 87.99 × 47.29 - Step 4: Simplify right side
58.78x = 4,161.05 - Step 5: Solve for x
x = 4,161.05/58.78 - Step 6: Final answer
x = 70.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.