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Finding the Fourth Proportional to 248.78, 343.34 and 150.60

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Solution

The fourth proportional to 248.78, 343.34 and 150.60 is: 207.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.78 : 343.34 = 150.60 : x
  2. Step 2: Convert to fraction form
    248.78/343.34 = 150.60/x
  3. Step 3: Cross multiply
    248.78x = 343.34 × 150.60
  4. Step 4: Simplify right side
    248.78x = 51,707.38
  5. Step 5: Solve for x
    x = 51,707.38/248.78
  6. Step 6: Final answer
    x = 207.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.