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Finding the Fourth Proportional to 135.83, 202.75 and 125.81

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Solution

The fourth proportional to 135.83, 202.75 and 125.81 is: 187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.83 : 202.75 = 125.81 : x
  2. Step 2: Convert to fraction form
    135.83/202.75 = 125.81/x
  3. Step 3: Cross multiply
    135.83x = 202.75 × 125.81
  4. Step 4: Simplify right side
    135.83x = 25,508.64
  5. Step 5: Solve for x
    x = 25,508.64/135.83
  6. Step 6: Final answer
    x = 187.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.