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Finding the Fourth Proportional to 467.09, 644.18 and 356.37

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Solution

The fourth proportional to 467.09, 644.18 and 356.37 is: 491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.09 : 644.18 = 356.37 : x
  2. Step 2: Convert to fraction form
    467.09/644.18 = 356.37/x
  3. Step 3: Cross multiply
    467.09x = 644.18 × 356.37
  4. Step 4: Simplify right side
    467.09x = 229,566.43
  5. Step 5: Solve for x
    x = 229,566.43/467.09
  6. Step 6: Final answer
    x = 491.48

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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.