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Finding the Fourth Proportional to 268.08, 400.06 and 261.04

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Solution

The fourth proportional to 268.08, 400.06 and 261.04 is: 389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.08 : 400.06 = 261.04 : x
  2. Step 2: Convert to fraction form
    268.08/400.06 = 261.04/x
  3. Step 3: Cross multiply
    268.08x = 400.06 × 261.04
  4. Step 4: Simplify right side
    268.08x = 104,431.66
  5. Step 5: Solve for x
    x = 104,431.66/268.08
  6. Step 6: Final answer
    x = 389.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.