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Finding the Fourth Proportional to 189.21, 262.40 and 177.33

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Solution

The fourth proportional to 189.21, 262.40 and 177.33 is: 245.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.21 : 262.40 = 177.33 : x
  2. Step 2: Convert to fraction form
    189.21/262.40 = 177.33/x
  3. Step 3: Cross multiply
    189.21x = 262.40 × 177.33
  4. Step 4: Simplify right side
    189.21x = 46,531.84
  5. Step 5: Solve for x
    x = 46,531.84/189.21
  6. Step 6: Final answer
    x = 245.93

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.