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Finding the Fourth Proportional to 317.44, 437.36 and 251.92

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Solution

The fourth proportional to 317.44, 437.36 and 251.92 is: 347.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.44 : 437.36 = 251.92 : x
  2. Step 2: Convert to fraction form
    317.44/437.36 = 251.92/x
  3. Step 3: Cross multiply
    317.44x = 437.36 × 251.92
  4. Step 4: Simplify right side
    317.44x = 110,179.73
  5. Step 5: Solve for x
    x = 110,179.73/317.44
  6. Step 6: Final answer
    x = 347.09

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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.