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Finding the Fourth Proportional to 395.34, 544.96 and 247.72

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Solution

The fourth proportional to 395.34, 544.96 and 247.72 is: 341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.34 : 544.96 = 247.72 : x
  2. Step 2: Convert to fraction form
    395.34/544.96 = 247.72/x
  3. Step 3: Cross multiply
    395.34x = 544.96 × 247.72
  4. Step 4: Simplify right side
    395.34x = 134,997.49
  5. Step 5: Solve for x
    x = 134,997.49/395.34
  6. Step 6: Final answer
    x = 341.47

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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.