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Finding the Fourth Proportional to 134.35, 201.55 and 47.69

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Solution

The fourth proportional to 134.35, 201.55 and 47.69 is: 71.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.35 : 201.55 = 47.69 : x
  2. Step 2: Convert to fraction form
    134.35/201.55 = 47.69/x
  3. Step 3: Cross multiply
    134.35x = 201.55 × 47.69
  4. Step 4: Simplify right side
    134.35x = 9,610.79
  5. Step 5: Solve for x
    x = 9,610.79/134.35
  6. Step 6: Final answer
    x = 71.54

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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.