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Finding the Fourth Proportional to 248.98, 371.28 and 231.67

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Solution

The fourth proportional to 248.98, 371.28 and 231.67 is: 345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.98 : 371.28 = 231.67 : x
  2. Step 2: Convert to fraction form
    248.98/371.28 = 231.67/x
  3. Step 3: Cross multiply
    248.98x = 371.28 × 231.67
  4. Step 4: Simplify right side
    248.98x = 86,011.42
  5. Step 5: Solve for x
    x = 86,011.42/248.98
  6. Step 6: Final answer
    x = 345.46

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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.