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Finding the Fourth Proportional to 381.44, 526.20 and 265.04

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Solution

The fourth proportional to 381.44, 526.20 and 265.04 is: 365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.44 : 526.20 = 265.04 : x
  2. Step 2: Convert to fraction form
    381.44/526.20 = 265.04/x
  3. Step 3: Cross multiply
    381.44x = 526.20 × 265.04
  4. Step 4: Simplify right side
    381.44x = 139,464.05
  5. Step 5: Solve for x
    x = 139,464.05/381.44
  6. Step 6: Final answer
    x = 365.63

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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.