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Finding the Fourth Proportional to 181.20, 262.20 and 181.20

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Solution

The fourth proportional to 181.20, 262.20 and 181.20 is: 262.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.20 : 262.20 = 181.20 : x
  2. Step 2: Convert to fraction form
    181.20/262.20 = 181.20/x
  3. Step 3: Cross multiply
    181.20x = 262.20 × 181.20
  4. Step 4: Simplify right side
    181.20x = 47,510.64
  5. Step 5: Solve for x
    x = 47,510.64/181.20
  6. Step 6: Final answer
    x = 262.20

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.