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Finding the Fourth Proportional to 264.81, 396.61 and 127.95

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Solution

The fourth proportional to 264.81, 396.61 and 127.95 is: 191.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.81 : 396.61 = 127.95 : x
  2. Step 2: Convert to fraction form
    264.81/396.61 = 127.95/x
  3. Step 3: Cross multiply
    264.81x = 396.61 × 127.95
  4. Step 4: Simplify right side
    264.81x = 50,746.25
  5. Step 5: Solve for x
    x = 50,746.25/264.81
  6. Step 6: Final answer
    x = 191.63

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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.