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Finding the Fourth Proportional to 175.28, 262.80 and 127.16

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Solution

The fourth proportional to 175.28, 262.80 and 127.16 is: 190.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.28 : 262.80 = 127.16 : x
  2. Step 2: Convert to fraction form
    175.28/262.80 = 127.16/x
  3. Step 3: Cross multiply
    175.28x = 262.80 × 127.16
  4. Step 4: Simplify right side
    175.28x = 33,417.65
  5. Step 5: Solve for x
    x = 33,417.65/175.28
  6. Step 6: Final answer
    x = 190.65

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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.