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Finding the Fourth Proportional to 1,177.46, 1,765.50 and 447.09

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Solution

The fourth proportional to 1,177.46, 1,765.50 and 447.09 is: 670.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.46 : 1,765.50 = 447.09 : x
  2. Step 2: Convert to fraction form
    1,177.46/1,765.50 = 447.09/x
  3. Step 3: Cross multiply
    1,177.46x = 1,765.50 × 447.09
  4. Step 4: Simplify right side
    1,177.46x = 789,337.40
  5. Step 5: Solve for x
    x = 789,337.40/1,177.46
  6. Step 6: Final answer
    x = 670.37

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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.