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Finding the Fourth Proportional to 268.16, 402.31 and 114

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Solution

The fourth proportional to 268.16, 402.31 and 114 is: 171.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.16 : 402.31 = 114 : x
  2. Step 2: Convert to fraction form
    268.16/402.31 = 114/x
  3. Step 3: Cross multiply
    268.16x = 402.31 × 114
  4. Step 4: Simplify right side
    268.16x = 45,863.34
  5. Step 5: Solve for x
    x = 45,863.34/268.16
  6. Step 6: Final answer
    x = 171.03

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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.