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Finding the Fourth Proportional to 422.42, 632.30 and 268.52

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Solution

The fourth proportional to 422.42, 632.30 and 268.52 is: 401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.42 : 632.30 = 268.52 : x
  2. Step 2: Convert to fraction form
    422.42/632.30 = 268.52/x
  3. Step 3: Cross multiply
    422.42x = 632.30 × 268.52
  4. Step 4: Simplify right side
    422.42x = 169,780.69
  5. Step 5: Solve for x
    x = 169,780.69/422.42
  6. Step 6: Final answer
    x = 401.93

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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.