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Finding the Fourth Proportional to 435.11, 652.68 and 218.43

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Solution

The fourth proportional to 435.11, 652.68 and 218.43 is: 327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.11 : 652.68 = 218.43 : x
  2. Step 2: Convert to fraction form
    435.11/652.68 = 218.43/x
  3. Step 3: Cross multiply
    435.11x = 652.68 × 218.43
  4. Step 4: Simplify right side
    435.11x = 142,564.89
  5. Step 5: Solve for x
    x = 142,564.89/435.11
  6. Step 6: Final answer
    x = 327.66

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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.