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Finding the Fourth Proportional to 134.96, 202.50 and 53.87

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Solution

The fourth proportional to 134.96, 202.50 and 53.87 is: 80.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.96 : 202.50 = 53.87 : x
  2. Step 2: Convert to fraction form
    134.96/202.50 = 53.87/x
  3. Step 3: Cross multiply
    134.96x = 202.50 × 53.87
  4. Step 4: Simplify right side
    134.96x = 10,907.66
  5. Step 5: Solve for x
    x = 10,907.66/134.96
  6. Step 6: Final answer
    x = 80.82

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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.