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Finding the Fourth Proportional to 248.06, 342.34 and 143.18

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Solution

The fourth proportional to 248.06, 342.34 and 143.18 is: 197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.06 : 342.34 = 143.18 : x
  2. Step 2: Convert to fraction form
    248.06/342.34 = 143.18/x
  3. Step 3: Cross multiply
    248.06x = 342.34 × 143.18
  4. Step 4: Simplify right side
    248.06x = 49,016.24
  5. Step 5: Solve for x
    x = 49,016.24/248.06
  6. Step 6: Final answer
    x = 197.60

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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.