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Finding the Fourth Proportional to 134.73, 202.02 and 72.98

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Solution

The fourth proportional to 134.73, 202.02 and 72.98 is: 109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.73 : 202.02 = 72.98 : x
  2. Step 2: Convert to fraction form
    134.73/202.02 = 72.98/x
  3. Step 3: Cross multiply
    134.73x = 202.02 × 72.98
  4. Step 4: Simplify right side
    134.73x = 14,742.41
  5. Step 5: Solve for x
    x = 14,742.41/134.73
  6. Step 6: Final answer
    x = 109.42

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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.