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Finding the Fourth Proportional to 107.21, 160.83 and 100.46

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Solution

The fourth proportional to 107.21, 160.83 and 100.46 is: 150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.21 : 160.83 = 100.46 : x
  2. Step 2: Convert to fraction form
    107.21/160.83 = 100.46/x
  3. Step 3: Cross multiply
    107.21x = 160.83 × 100.46
  4. Step 4: Simplify right side
    107.21x = 16,156.98
  5. Step 5: Solve for x
    x = 16,156.98/107.21
  6. Step 6: Final answer
    x = 150.70

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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.