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Finding the Fourth Proportional to 175.96, 262.91 and 172.12

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Solution

The fourth proportional to 175.96, 262.91 and 172.12 is: 257.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.96 : 262.91 = 172.12 : x
  2. Step 2: Convert to fraction form
    175.96/262.91 = 172.12/x
  3. Step 3: Cross multiply
    175.96x = 262.91 × 172.12
  4. Step 4: Simplify right side
    175.96x = 45,252.07
  5. Step 5: Solve for x
    x = 45,252.07/175.96
  6. Step 6: Final answer
    x = 257.17

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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.