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Finding the Fourth Proportional to 252.46, 378.66 and 175.20

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Solution

The fourth proportional to 252.46, 378.66 and 175.20 is: 262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.46 : 378.66 = 175.20 : x
  2. Step 2: Convert to fraction form
    252.46/378.66 = 175.20/x
  3. Step 3: Cross multiply
    252.46x = 378.66 × 175.20
  4. Step 4: Simplify right side
    252.46x = 66,341.23
  5. Step 5: Solve for x
    x = 66,341.23/252.46
  6. Step 6: Final answer
    x = 262.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.