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Finding the Fourth Proportional to 632.44, 948.68 and 215.92

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Solution

The fourth proportional to 632.44, 948.68 and 215.92 is: 323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.44 : 948.68 = 215.92 : x
  2. Step 2: Convert to fraction form
    632.44/948.68 = 215.92/x
  3. Step 3: Cross multiply
    632.44x = 948.68 × 215.92
  4. Step 4: Simplify right side
    632.44x = 204,838.99
  5. Step 5: Solve for x
    x = 204,838.99/632.44
  6. Step 6: Final answer
    x = 323.89

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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.