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Finding the Fourth Proportional to 235.21, 351.47 and 179.31

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Solution

The fourth proportional to 235.21, 351.47 and 179.31 is: 267.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.21 : 351.47 = 179.31 : x
  2. Step 2: Convert to fraction form
    235.21/351.47 = 179.31/x
  3. Step 3: Cross multiply
    235.21x = 351.47 × 179.31
  4. Step 4: Simplify right side
    235.21x = 63,021.11
  5. Step 5: Solve for x
    x = 63,021.11/235.21
  6. Step 6: Final answer
    x = 267.94

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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.