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Finding the Fourth Proportional to 264.34, 396.39 and 127.13

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Solution

The fourth proportional to 264.34, 396.39 and 127.13 is: 190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.34 : 396.39 = 127.13 : x
  2. Step 2: Convert to fraction form
    264.34/396.39 = 127.13/x
  3. Step 3: Cross multiply
    264.34x = 396.39 × 127.13
  4. Step 4: Simplify right side
    264.34x = 50,393.06
  5. Step 5: Solve for x
    x = 50,393.06/264.34
  6. Step 6: Final answer
    x = 190.64

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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.