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Finding the Fourth Proportional to 134.58, 201.86 and 53.43

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Solution

The fourth proportional to 134.58, 201.86 and 53.43 is: 80.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.58 : 201.86 = 53.43 : x
  2. Step 2: Convert to fraction form
    134.58/201.86 = 53.43/x
  3. Step 3: Cross multiply
    134.58x = 201.86 × 53.43
  4. Step 4: Simplify right side
    134.58x = 10,785.38
  5. Step 5: Solve for x
    x = 10,785.38/134.58
  6. Step 6: Final answer
    x = 80.14

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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.