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Finding the Fourth Proportional to 203.21, 279.75 and 195.01

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Solution

The fourth proportional to 203.21, 279.75 and 195.01 is: 268.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.21 : 279.75 = 195.01 : x
  2. Step 2: Convert to fraction form
    203.21/279.75 = 195.01/x
  3. Step 3: Cross multiply
    203.21x = 279.75 × 195.01
  4. Step 4: Simplify right side
    203.21x = 54,554.08
  5. Step 5: Solve for x
    x = 54,554.08/203.21
  6. Step 6: Final answer
    x = 268.46

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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.