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Finding the Fourth Proportional to 253.63, 350.02 and 143.13

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Solution

The fourth proportional to 253.63, 350.02 and 143.13 is: 197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.63 : 350.02 = 143.13 : x
  2. Step 2: Convert to fraction form
    253.63/350.02 = 143.13/x
  3. Step 3: Cross multiply
    253.63x = 350.02 × 143.13
  4. Step 4: Simplify right side
    253.63x = 50,099.85
  5. Step 5: Solve for x
    x = 50,099.85/253.63
  6. Step 6: Final answer
    x = 197.53

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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.