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Finding the Fourth Proportional to 324.02, 485.75 and 141.27

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Solution

The fourth proportional to 324.02, 485.75 and 141.27 is: 211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.02 : 485.75 = 141.27 : x
  2. Step 2: Convert to fraction form
    324.02/485.75 = 141.27/x
  3. Step 3: Cross multiply
    324.02x = 485.75 × 141.27
  4. Step 4: Simplify right side
    324.02x = 68,621.90
  5. Step 5: Solve for x
    x = 68,621.90/324.02
  6. Step 6: Final answer
    x = 211.79

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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.