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Finding the Fourth Proportional to 323.81, 446.54 and 261.59

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Solution

The fourth proportional to 323.81, 446.54 and 261.59 is: 360.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.81 : 446.54 = 261.59 : x
  2. Step 2: Convert to fraction form
    323.81/446.54 = 261.59/x
  3. Step 3: Cross multiply
    323.81x = 446.54 × 261.59
  4. Step 4: Simplify right side
    323.81x = 116,810.21
  5. Step 5: Solve for x
    x = 116,810.21/323.81
  6. Step 6: Final answer
    x = 360.74

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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.