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Finding the Fourth Proportional to 248.57, 342.78 and 193.29

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Solution

The fourth proportional to 248.57, 342.78 and 193.29 is: 266.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.57 : 342.78 = 193.29 : x
  2. Step 2: Convert to fraction form
    248.57/342.78 = 193.29/x
  3. Step 3: Cross multiply
    248.57x = 342.78 × 193.29
  4. Step 4: Simplify right side
    248.57x = 66,255.02
  5. Step 5: Solve for x
    x = 66,255.02/248.57
  6. Step 6: Final answer
    x = 266.55

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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.