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Finding the Fourth Proportional to 268.44, 402.30 and 176.91

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Solution

The fourth proportional to 268.44, 402.30 and 176.91 is: 265.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.44 : 402.30 = 176.91 : x
  2. Step 2: Convert to fraction form
    268.44/402.30 = 176.91/x
  3. Step 3: Cross multiply
    268.44x = 402.30 × 176.91
  4. Step 4: Simplify right side
    268.44x = 71,170.89
  5. Step 5: Solve for x
    x = 71,170.89/268.44
  6. Step 6: Final answer
    x = 265.13

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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.