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Finding the Fourth Proportional to 107.24, 160.68 and 104.72

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Solution

The fourth proportional to 107.24, 160.68 and 104.72 is: 156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.24 : 160.68 = 104.72 : x
  2. Step 2: Convert to fraction form
    107.24/160.68 = 104.72/x
  3. Step 3: Cross multiply
    107.24x = 160.68 × 104.72
  4. Step 4: Simplify right side
    107.24x = 16,826.41
  5. Step 5: Solve for x
    x = 16,826.41/107.24
  6. Step 6: Final answer
    x = 156.90

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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.