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Finding the Fourth Proportional to 134.87, 202.26 and 53.74

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Solution

The fourth proportional to 134.87, 202.26 and 53.74 is: 80.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.87 : 202.26 = 53.74 : x
  2. Step 2: Convert to fraction form
    134.87/202.26 = 53.74/x
  3. Step 3: Cross multiply
    134.87x = 202.26 × 53.74
  4. Step 4: Simplify right side
    134.87x = 10,869.45
  5. Step 5: Solve for x
    x = 10,869.45/134.87
  6. Step 6: Final answer
    x = 80.59

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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.