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Finding the Fourth Proportional to 261.48, 394.11 and 250.50

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Solution

The fourth proportional to 261.48, 394.11 and 250.50 is: 377.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.48 : 394.11 = 250.50 : x
  2. Step 2: Convert to fraction form
    261.48/394.11 = 250.50/x
  3. Step 3: Cross multiply
    261.48x = 394.11 × 250.50
  4. Step 4: Simplify right side
    261.48x = 98,724.56
  5. Step 5: Solve for x
    x = 98,724.56/261.48
  6. Step 6: Final answer
    x = 377.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.