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Finding the Fourth Proportional to 107.58, 161.27 and 49.76

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Solution

The fourth proportional to 107.58, 161.27 and 49.76 is: 74.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.58 : 161.27 = 49.76 : x
  2. Step 2: Convert to fraction form
    107.58/161.27 = 49.76/x
  3. Step 3: Cross multiply
    107.58x = 161.27 × 49.76
  4. Step 4: Simplify right side
    107.58x = 8,024.11
  5. Step 5: Solve for x
    x = 8,024.11/107.58
  6. Step 6: Final answer
    x = 74.59

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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.