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Finding the Fourth Proportional to 247.03, 340.93 and 143.53

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Solution

The fourth proportional to 247.03, 340.93 and 143.53 is: 198.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.03 : 340.93 = 143.53 : x
  2. Step 2: Convert to fraction form
    247.03/340.93 = 143.53/x
  3. Step 3: Cross multiply
    247.03x = 340.93 × 143.53
  4. Step 4: Simplify right side
    247.03x = 48,934.56
  5. Step 5: Solve for x
    x = 48,934.56/247.03
  6. Step 6: Final answer
    x = 198.09

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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.