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Finding the Fourth Proportional to 248.42, 370.95 and 231.41

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Solution

The fourth proportional to 248.42, 370.95 and 231.41 is: 345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.42 : 370.95 = 231.41 : x
  2. Step 2: Convert to fraction form
    248.42/370.95 = 231.41/x
  3. Step 3: Cross multiply
    248.42x = 370.95 × 231.41
  4. Step 4: Simplify right side
    248.42x = 85,840.38
  5. Step 5: Solve for x
    x = 85,840.38/248.42
  6. Step 6: Final answer
    x = 345.55

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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.