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Finding the Fourth Proportional to 231.55, 346.86 and 170.49

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Solution

The fourth proportional to 231.55, 346.86 and 170.49 is: 255.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.55 : 346.86 = 170.49 : x
  2. Step 2: Convert to fraction form
    231.55/346.86 = 170.49/x
  3. Step 3: Cross multiply
    231.55x = 346.86 × 170.49
  4. Step 4: Simplify right side
    231.55x = 59,136.16
  5. Step 5: Solve for x
    x = 59,136.16/231.55
  6. Step 6: Final answer
    x = 255.39

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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.