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Finding the Fourth Proportional to 155.18, 231.93 and 134.84

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Solution

The fourth proportional to 155.18, 231.93 and 134.84 is: 201.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.18 : 231.93 = 134.84 : x
  2. Step 2: Convert to fraction form
    155.18/231.93 = 134.84/x
  3. Step 3: Cross multiply
    155.18x = 231.93 × 134.84
  4. Step 4: Simplify right side
    155.18x = 31,272.28
  5. Step 5: Solve for x
    x = 31,272.28/155.18
  6. Step 6: Final answer
    x = 201.53

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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.