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Finding the Fourth Proportional to 134.99, 202.58 and 53.82

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Solution

The fourth proportional to 134.99, 202.58 and 53.82 is: 80.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.99 : 202.58 = 53.82 : x
  2. Step 2: Convert to fraction form
    134.99/202.58 = 53.82/x
  3. Step 3: Cross multiply
    134.99x = 202.58 × 53.82
  4. Step 4: Simplify right side
    134.99x = 10,902.86
  5. Step 5: Solve for x
    x = 10,902.86/134.99
  6. Step 6: Final answer
    x = 80.77

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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.