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Finding the Fourth Proportional to 176.52, 263.96 and 172.20

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Solution

The fourth proportional to 176.52, 263.96 and 172.20 is: 257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.52 : 263.96 = 172.20 : x
  2. Step 2: Convert to fraction form
    176.52/263.96 = 172.20/x
  3. Step 3: Cross multiply
    176.52x = 263.96 × 172.20
  4. Step 4: Simplify right side
    176.52x = 45,453.91
  5. Step 5: Solve for x
    x = 45,453.91/176.52
  6. Step 6: Final answer
    x = 257.50

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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.