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Finding the Fourth Proportional to 451.70, 677.36 and 159.12

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Solution

The fourth proportional to 451.70, 677.36 and 159.12 is: 238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.70 : 677.36 = 159.12 : x
  2. Step 2: Convert to fraction form
    451.70/677.36 = 159.12/x
  3. Step 3: Cross multiply
    451.70x = 677.36 × 159.12
  4. Step 4: Simplify right side
    451.70x = 107,780.73
  5. Step 5: Solve for x
    x = 107,780.73/451.70
  6. Step 6: Final answer
    x = 238.61

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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.