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Finding the Fourth Proportional to 381.72, 526.62 and 234.34

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Solution

The fourth proportional to 381.72, 526.62 and 234.34 is: 323.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.72 : 526.62 = 234.34 : x
  2. Step 2: Convert to fraction form
    381.72/526.62 = 234.34/x
  3. Step 3: Cross multiply
    381.72x = 526.62 × 234.34
  4. Step 4: Simplify right side
    381.72x = 123,408.13
  5. Step 5: Solve for x
    x = 123,408.13/381.72
  6. Step 6: Final answer
    x = 323.29

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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.