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Finding the Fourth Proportional to 135.07, 186.41 and 130.82

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Solution

The fourth proportional to 135.07, 186.41 and 130.82 is: 180.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.07 : 186.41 = 130.82 : x
  2. Step 2: Convert to fraction form
    135.07/186.41 = 130.82/x
  3. Step 3: Cross multiply
    135.07x = 186.41 × 130.82
  4. Step 4: Simplify right side
    135.07x = 24,386.02
  5. Step 5: Solve for x
    x = 24,386.02/135.07
  6. Step 6: Final answer
    x = 180.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.