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Finding the Fourth Proportional to 268.67, 403.10 and 171.02

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Solution

The fourth proportional to 268.67, 403.10 and 171.02 is: 256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.67 : 403.10 = 171.02 : x
  2. Step 2: Convert to fraction form
    268.67/403.10 = 171.02/x
  3. Step 3: Cross multiply
    268.67x = 403.10 × 171.02
  4. Step 4: Simplify right side
    268.67x = 68,935.29
  5. Step 5: Solve for x
    x = 68,935.29/268.67
  6. Step 6: Final answer
    x = 256.58

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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.