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Finding the Fourth Proportional to 175.72, 243.64 and 168.16

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Solution

The fourth proportional to 175.72, 243.64 and 168.16 is: 233.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.72 : 243.64 = 168.16 : x
  2. Step 2: Convert to fraction form
    175.72/243.64 = 168.16/x
  3. Step 3: Cross multiply
    175.72x = 243.64 × 168.16
  4. Step 4: Simplify right side
    175.72x = 40,970.50
  5. Step 5: Solve for x
    x = 40,970.50/175.72
  6. Step 6: Final answer
    x = 233.16

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.