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Finding the Fourth Proportional to 470.13, 704.92 and 161.85

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Solution

The fourth proportional to 470.13, 704.92 and 161.85 is: 242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.13 : 704.92 = 161.85 : x
  2. Step 2: Convert to fraction form
    470.13/704.92 = 161.85/x
  3. Step 3: Cross multiply
    470.13x = 704.92 × 161.85
  4. Step 4: Simplify right side
    470.13x = 114,091.30
  5. Step 5: Solve for x
    x = 114,091.30/470.13
  6. Step 6: Final answer
    x = 242.68

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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.