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Finding the Fourth Proportional to 467.08, 644.56 and 257.27

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Solution

The fourth proportional to 467.08, 644.56 and 257.27 is: 355.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.08 : 644.56 = 257.27 : x
  2. Step 2: Convert to fraction form
    467.08/644.56 = 257.27/x
  3. Step 3: Cross multiply
    467.08x = 644.56 × 257.27
  4. Step 4: Simplify right side
    467.08x = 165,822.09
  5. Step 5: Solve for x
    x = 165,822.09/467.08
  6. Step 6: Final answer
    x = 355.02

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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.