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Finding the Fourth Proportional to 106.22, 159.33 and 37.76

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Solution

The fourth proportional to 106.22, 159.33 and 37.76 is: 56.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.22 : 159.33 = 37.76 : x
  2. Step 2: Convert to fraction form
    106.22/159.33 = 37.76/x
  3. Step 3: Cross multiply
    106.22x = 159.33 × 37.76
  4. Step 4: Simplify right side
    106.22x = 6,015.50
  5. Step 5: Solve for x
    x = 6,015.50/106.22
  6. Step 6: Final answer
    x = 56.64

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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.