Finding the Fourth Proportional to 338.99, 507.26 and 257.58
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Solution
The fourth proportional to 338.99, 507.26 and 257.58 is: 385.45
Step by Step Solution
- Step 1: Write the proportion equation
338.99 : 507.26 = 257.58 : x - Step 2: Convert to fraction form
338.99/507.26 = 257.58/x - Step 3: Cross multiply
338.99x = 507.26 × 257.58 - Step 4: Simplify right side
338.99x = 130,660.67 - Step 5: Solve for x
x = 130,660.67/338.99 - Step 6: Final answer
x = 385.45
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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.