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Finding the Fourth Proportional to 444.34, 666.89 and 213.39

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Solution

The fourth proportional to 444.34, 666.89 and 213.39 is: 320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.34 : 666.89 = 213.39 : x
  2. Step 2: Convert to fraction form
    444.34/666.89 = 213.39/x
  3. Step 3: Cross multiply
    444.34x = 666.89 × 213.39
  4. Step 4: Simplify right side
    444.34x = 142,307.66
  5. Step 5: Solve for x
    x = 142,307.66/444.34
  6. Step 6: Final answer
    x = 320.27

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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.