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Finding the Fourth Proportional to 182.62, 253.20 and 172.90

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Solution

The fourth proportional to 182.62, 253.20 and 172.90 is: 239.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.62 : 253.20 = 172.90 : x
  2. Step 2: Convert to fraction form
    182.62/253.20 = 172.90/x
  3. Step 3: Cross multiply
    182.62x = 253.20 × 172.90
  4. Step 4: Simplify right side
    182.62x = 43,778.28
  5. Step 5: Solve for x
    x = 43,778.28/182.62
  6. Step 6: Final answer
    x = 239.72

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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.