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Finding the Fourth Proportional to 381.37, 526.29 and 213.33

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Solution

The fourth proportional to 381.37, 526.29 and 213.33 is: 294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.37 : 526.29 = 213.33 : x
  2. Step 2: Convert to fraction form
    381.37/526.29 = 213.33/x
  3. Step 3: Cross multiply
    381.37x = 526.29 × 213.33
  4. Step 4: Simplify right side
    381.37x = 112,273.45
  5. Step 5: Solve for x
    x = 112,273.45/381.37
  6. Step 6: Final answer
    x = 294.40

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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.