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Finding the Fourth Proportional to 324.56, 486.46 and 187.32

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Solution

The fourth proportional to 324.56, 486.46 and 187.32 is: 280.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.56 : 486.46 = 187.32 : x
  2. Step 2: Convert to fraction form
    324.56/486.46 = 187.32/x
  3. Step 3: Cross multiply
    324.56x = 486.46 × 187.32
  4. Step 4: Simplify right side
    324.56x = 91,123.97
  5. Step 5: Solve for x
    x = 91,123.97/324.56
  6. Step 6: Final answer
    x = 280.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.