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Finding the Fourth Proportional to 445.95, 667.71 and 262.89

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Solution

The fourth proportional to 445.95, 667.71 and 262.89 is: 393.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.95 : 667.71 = 262.89 : x
  2. Step 2: Convert to fraction form
    445.95/667.71 = 262.89/x
  3. Step 3: Cross multiply
    445.95x = 667.71 × 262.89
  4. Step 4: Simplify right side
    445.95x = 175,534.28
  5. Step 5: Solve for x
    x = 175,534.28/445.95
  6. Step 6: Final answer
    x = 393.62

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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.