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Finding the Fourth Proportional to 215.63, 297.69 and 194.84

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Solution

The fourth proportional to 215.63, 297.69 and 194.84 is: 268.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.63 : 297.69 = 194.84 : x
  2. Step 2: Convert to fraction form
    215.63/297.69 = 194.84/x
  3. Step 3: Cross multiply
    215.63x = 297.69 × 194.84
  4. Step 4: Simplify right side
    215.63x = 58,001.92
  5. Step 5: Solve for x
    x = 58,001.92/215.63
  6. Step 6: Final answer
    x = 268.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.