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Finding the Fourth Proportional to 135.69, 202.56 and 130.56

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Solution

The fourth proportional to 135.69, 202.56 and 130.56 is: 194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.69 : 202.56 = 130.56 : x
  2. Step 2: Convert to fraction form
    135.69/202.56 = 130.56/x
  3. Step 3: Cross multiply
    135.69x = 202.56 × 130.56
  4. Step 4: Simplify right side
    135.69x = 26,446.23
  5. Step 5: Solve for x
    x = 26,446.23/135.69
  6. Step 6: Final answer
    x = 194.90

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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.