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Finding the Fourth Proportional to 490.59, 735.96 and 161.46

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Solution

The fourth proportional to 490.59, 735.96 and 161.46 is: 242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.59 : 735.96 = 161.46 : x
  2. Step 2: Convert to fraction form
    490.59/735.96 = 161.46/x
  3. Step 3: Cross multiply
    490.59x = 735.96 × 161.46
  4. Step 4: Simplify right side
    490.59x = 118,828.10
  5. Step 5: Solve for x
    x = 118,828.10/490.59
  6. Step 6: Final answer
    x = 242.21

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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.