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Finding the Fourth Proportional to 443.30, 664.23 and 235.05

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Solution

The fourth proportional to 443.30, 664.23 and 235.05 is: 352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.30 : 664.23 = 235.05 : x
  2. Step 2: Convert to fraction form
    443.30/664.23 = 235.05/x
  3. Step 3: Cross multiply
    443.30x = 664.23 × 235.05
  4. Step 4: Simplify right side
    443.30x = 156,127.26
  5. Step 5: Solve for x
    x = 156,127.26/443.30
  6. Step 6: Final answer
    x = 352.20

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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.