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Finding the Fourth Proportional to 465.43, 697.97 and 136.28

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Solution

The fourth proportional to 465.43, 697.97 and 136.28 is: 204.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.43 : 697.97 = 136.28 : x
  2. Step 2: Convert to fraction form
    465.43/697.97 = 136.28/x
  3. Step 3: Cross multiply
    465.43x = 697.97 × 136.28
  4. Step 4: Simplify right side
    465.43x = 95,115.86
  5. Step 5: Solve for x
    x = 95,115.86/465.43
  6. Step 6: Final answer
    x = 204.36

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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.