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Finding the Fourth Proportional to 644.34, 966.90 and 336.26

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Solution

The fourth proportional to 644.34, 966.90 and 336.26 is: 504.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.34 : 966.90 = 336.26 : x
  2. Step 2: Convert to fraction form
    644.34/966.90 = 336.26/x
  3. Step 3: Cross multiply
    644.34x = 966.90 × 336.26
  4. Step 4: Simplify right side
    644.34x = 325,129.79
  5. Step 5: Solve for x
    x = 325,129.79/644.34
  6. Step 6: Final answer
    x = 504.59

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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.