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Finding the Fourth Proportional to 254.48, 383.10 and 231.80

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Solution

The fourth proportional to 254.48, 383.10 and 231.80 is: 348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.48 : 383.10 = 231.80 : x
  2. Step 2: Convert to fraction form
    254.48/383.10 = 231.80/x
  3. Step 3: Cross multiply
    254.48x = 383.10 × 231.80
  4. Step 4: Simplify right side
    254.48x = 88,799.80
  5. Step 5: Solve for x
    x = 88,799.80/254.48
  6. Step 6: Final answer
    x = 348.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.