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Finding the Fourth Proportional to 443.02, 664.60 and 169.10

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Solution

The fourth proportional to 443.02, 664.60 and 169.10 is: 253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.02 : 664.60 = 169.10 : x
  2. Step 2: Convert to fraction form
    443.02/664.60 = 169.10/x
  3. Step 3: Cross multiply
    443.02x = 664.60 × 169.10
  4. Step 4: Simplify right side
    443.02x = 112,383.86
  5. Step 5: Solve for x
    x = 112,383.86/443.02
  6. Step 6: Final answer
    x = 253.68

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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.