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Finding the Fourth Proportional to 381.72, 571.78 and 244.06

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Solution

The fourth proportional to 381.72, 571.78 and 244.06 is: 365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.72 : 571.78 = 244.06 : x
  2. Step 2: Convert to fraction form
    381.72/571.78 = 244.06/x
  3. Step 3: Cross multiply
    381.72x = 571.78 × 244.06
  4. Step 4: Simplify right side
    381.72x = 139,549.35
  5. Step 5: Solve for x
    x = 139,549.35/381.72
  6. Step 6: Final answer
    x = 365.58

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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.