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Finding the Fourth Proportional to 231, 346 and 170.24

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Solution

The fourth proportional to 231, 346 and 170.24 is: 254.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    231 : 346 = 170.24 : x
  2. Step 2: Convert to fraction form
    231/346 = 170.24/x
  3. Step 3: Cross multiply
    231x = 346 × 170.24
  4. Step 4: Simplify right side
    231x = 58,903.04
  5. Step 5: Solve for x
    x = 58,903.04/231
  6. Step 6: Final answer
    x = 254.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.