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Finding the Fourth Proportional to 248.67, 375.21 and 238.68

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Solution

The fourth proportional to 248.67, 375.21 and 238.68 is: 360.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.67 : 375.21 = 238.68 : x
  2. Step 2: Convert to fraction form
    248.67/375.21 = 238.68/x
  3. Step 3: Cross multiply
    248.67x = 375.21 × 238.68
  4. Step 4: Simplify right side
    248.67x = 89,555.12
  5. Step 5: Solve for x
    x = 89,555.12/248.67
  6. Step 6: Final answer
    x = 360.14

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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.