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Finding the Fourth Proportional to 264.71, 396.72 and 191.83

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Solution

The fourth proportional to 264.71, 396.72 and 191.83 is: 287.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.71 : 396.72 = 191.83 : x
  2. Step 2: Convert to fraction form
    264.71/396.72 = 191.83/x
  3. Step 3: Cross multiply
    264.71x = 396.72 × 191.83
  4. Step 4: Simplify right side
    264.71x = 76,102.80
  5. Step 5: Solve for x
    x = 76,102.80/264.71
  6. Step 6: Final answer
    x = 287.49

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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.