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Finding the Fourth Proportional to 381.54, 526.56 and 234.18

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Solution

The fourth proportional to 381.54, 526.56 and 234.18 is: 323.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.54 : 526.56 = 234.18 : x
  2. Step 2: Convert to fraction form
    381.54/526.56 = 234.18/x
  3. Step 3: Cross multiply
    381.54x = 526.56 × 234.18
  4. Step 4: Simplify right side
    381.54x = 123,309.82
  5. Step 5: Solve for x
    x = 123,309.82/381.54
  6. Step 6: Final answer
    x = 323.19

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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.