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Finding the Fourth Proportional to 443.39, 667.54 and 346.41

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Solution

The fourth proportional to 443.39, 667.54 and 346.41 is: 521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.39 : 667.54 = 346.41 : x
  2. Step 2: Convert to fraction form
    443.39/667.54 = 346.41/x
  3. Step 3: Cross multiply
    443.39x = 667.54 × 346.41
  4. Step 4: Simplify right side
    443.39x = 231,242.96
  5. Step 5: Solve for x
    x = 231,242.96/443.39
  6. Step 6: Final answer
    x = 521.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.