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Finding the Fourth Proportional to 381.26, 526.43 and 335.18

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Solution

The fourth proportional to 381.26, 526.43 and 335.18 is: 462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.26 : 526.43 = 335.18 : x
  2. Step 2: Convert to fraction form
    381.26/526.43 = 335.18/x
  3. Step 3: Cross multiply
    381.26x = 526.43 × 335.18
  4. Step 4: Simplify right side
    381.26x = 176,450.96
  5. Step 5: Solve for x
    x = 176,450.96/381.26
  6. Step 6: Final answer
    x = 462.81

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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.