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Finding the Fourth Proportional to 248.44, 342.87 and 143.53

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Solution

The fourth proportional to 248.44, 342.87 and 143.53 is: 198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.44 : 342.87 = 143.53 : x
  2. Step 2: Convert to fraction form
    248.44/342.87 = 143.53/x
  3. Step 3: Cross multiply
    248.44x = 342.87 × 143.53
  4. Step 4: Simplify right side
    248.44x = 49,209.70
  5. Step 5: Solve for x
    x = 49,209.70/248.44
  6. Step 6: Final answer
    x = 198.08

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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.