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Finding the Fourth Proportional to 382.26, 527.76 and 283.90

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Solution

The fourth proportional to 382.26, 527.76 and 283.90 is: 391.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.26 : 527.76 = 283.90 : x
  2. Step 2: Convert to fraction form
    382.26/527.76 = 283.90/x
  3. Step 3: Cross multiply
    382.26x = 527.76 × 283.90
  4. Step 4: Simplify right side
    382.26x = 149,831.06
  5. Step 5: Solve for x
    x = 149,831.06/382.26
  6. Step 6: Final answer
    x = 391.96

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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.