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Finding the Fourth Proportional to 264.30, 363.09 and 215.04

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Solution

The fourth proportional to 264.30, 363.09 and 215.04 is: 295.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.30 : 363.09 = 215.04 : x
  2. Step 2: Convert to fraction form
    264.30/363.09 = 215.04/x
  3. Step 3: Cross multiply
    264.30x = 363.09 × 215.04
  4. Step 4: Simplify right side
    264.30x = 78,078.87
  5. Step 5: Solve for x
    x = 78,078.87/264.30
  6. Step 6: Final answer
    x = 295.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.