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Finding the Fourth Proportional to 380.43, 524.75 and 324.27

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Solution

The fourth proportional to 380.43, 524.75 and 324.27 is: 447.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.43 : 524.75 = 324.27 : x
  2. Step 2: Convert to fraction form
    380.43/524.75 = 324.27/x
  3. Step 3: Cross multiply
    380.43x = 524.75 × 324.27
  4. Step 4: Simplify right side
    380.43x = 170,159.06
  5. Step 5: Solve for x
    x = 170,159.06/380.43
  6. Step 6: Final answer
    x = 447.28

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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.