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Finding the Fourth Proportional to 181.62, 272.52 and 143.22

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Solution

The fourth proportional to 181.62, 272.52 and 143.22 is: 214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.62 : 272.52 = 143.22 : x
  2. Step 2: Convert to fraction form
    181.62/272.52 = 143.22/x
  3. Step 3: Cross multiply
    181.62x = 272.52 × 143.22
  4. Step 4: Simplify right side
    181.62x = 39,030.31
  5. Step 5: Solve for x
    x = 39,030.31/181.62
  6. Step 6: Final answer
    x = 214.90

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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.