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Finding the Fourth Proportional to 215.69, 323.54 and 93.95

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Solution

The fourth proportional to 215.69, 323.54 and 93.95 is: 140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.69 : 323.54 = 93.95 : x
  2. Step 2: Convert to fraction form
    215.69/323.54 = 93.95/x
  3. Step 3: Cross multiply
    215.69x = 323.54 × 93.95
  4. Step 4: Simplify right side
    215.69x = 30,396.58
  5. Step 5: Solve for x
    x = 30,396.58/215.69
  6. Step 6: Final answer
    x = 140.93

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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.