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Finding the Fourth Proportional to 175.76, 262.61 and 142.84

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Solution

The fourth proportional to 175.76, 262.61 and 142.84 is: 213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.76 : 262.61 = 142.84 : x
  2. Step 2: Convert to fraction form
    175.76/262.61 = 142.84/x
  3. Step 3: Cross multiply
    175.76x = 262.61 × 142.84
  4. Step 4: Simplify right side
    175.76x = 37,510.92
  5. Step 5: Solve for x
    x = 37,510.92/175.76
  6. Step 6: Final answer
    x = 213.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.