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Finding the Fourth Proportional to 107.96, 162.03 and 56.66

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Solution

The fourth proportional to 107.96, 162.03 and 56.66 is: 85.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.96 : 162.03 = 56.66 : x
  2. Step 2: Convert to fraction form
    107.96/162.03 = 56.66/x
  3. Step 3: Cross multiply
    107.96x = 162.03 × 56.66
  4. Step 4: Simplify right side
    107.96x = 9,180.62
  5. Step 5: Solve for x
    x = 9,180.62/107.96
  6. Step 6: Final answer
    x = 85.04

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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.