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Finding the Fourth Proportional to 268.60, 405.06 and 264.96

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Solution

The fourth proportional to 268.60, 405.06 and 264.96 is: 399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.60 : 405.06 = 264.96 : x
  2. Step 2: Convert to fraction form
    268.60/405.06 = 264.96/x
  3. Step 3: Cross multiply
    268.60x = 405.06 × 264.96
  4. Step 4: Simplify right side
    268.60x = 107,322.68
  5. Step 5: Solve for x
    x = 107,322.68/268.60
  6. Step 6: Final answer
    x = 399.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.