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Finding the Fourth Proportional to 381.58, 526.54 and 234.18

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Solution

The fourth proportional to 381.58, 526.54 and 234.18 is: 323.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.58 : 526.54 = 234.18 : x
  2. Step 2: Convert to fraction form
    381.58/526.54 = 234.18/x
  3. Step 3: Cross multiply
    381.58x = 526.54 × 234.18
  4. Step 4: Simplify right side
    381.58x = 123,305.14
  5. Step 5: Solve for x
    x = 123,305.14/381.58
  6. Step 6: Final answer
    x = 323.14

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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.