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Finding the Fourth Proportional to 135.11, 202.53 and 43.74

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Solution

The fourth proportional to 135.11, 202.53 and 43.74 is: 65.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.11 : 202.53 = 43.74 : x
  2. Step 2: Convert to fraction form
    135.11/202.53 = 43.74/x
  3. Step 3: Cross multiply
    135.11x = 202.53 × 43.74
  4. Step 4: Simplify right side
    135.11x = 8,859.04
  5. Step 5: Solve for x
    x = 8,859.04/135.11
  6. Step 6: Final answer
    x = 65.57

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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.