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Finding the Fourth Proportional to 264.79, 396.91 and 187.75

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Solution

The fourth proportional to 264.79, 396.91 and 187.75 is: 281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.79 : 396.91 = 187.75 : x
  2. Step 2: Convert to fraction form
    264.79/396.91 = 187.75/x
  3. Step 3: Cross multiply
    264.79x = 396.91 × 187.75
  4. Step 4: Simplify right side
    264.79x = 74,519.85
  5. Step 5: Solve for x
    x = 74,519.85/264.79
  6. Step 6: Final answer
    x = 281.43

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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.