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Finding the Fourth Proportional to 268.63, 401.71 and 203.65

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Solution

The fourth proportional to 268.63, 401.71 and 203.65 is: 304.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.63 : 401.71 = 203.65 : x
  2. Step 2: Convert to fraction form
    268.63/401.71 = 203.65/x
  3. Step 3: Cross multiply
    268.63x = 401.71 × 203.65
  4. Step 4: Simplify right side
    268.63x = 81,808.24
  5. Step 5: Solve for x
    x = 81,808.24/268.63
  6. Step 6: Final answer
    x = 304.54

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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.