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Finding the Fourth Proportional to 455.10, 682.68 and 162.60

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Solution

The fourth proportional to 455.10, 682.68 and 162.60 is: 243.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.10 : 682.68 = 162.60 : x
  2. Step 2: Convert to fraction form
    455.10/682.68 = 162.60/x
  3. Step 3: Cross multiply
    455.10x = 682.68 × 162.60
  4. Step 4: Simplify right side
    455.10x = 111,003.77
  5. Step 5: Solve for x
    x = 111,003.77/455.10
  6. Step 6: Final answer
    x = 243.91

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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.