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Finding the Fourth Proportional to 234.18, 351.45 and 186.30

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Solution

The fourth proportional to 234.18, 351.45 and 186.30 is: 279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.18 : 351.45 = 186.30 : x
  2. Step 2: Convert to fraction form
    234.18/351.45 = 186.30/x
  3. Step 3: Cross multiply
    234.18x = 351.45 × 186.30
  4. Step 4: Simplify right side
    234.18x = 65,475.14
  5. Step 5: Solve for x
    x = 65,475.14/234.18
  6. Step 6: Final answer
    x = 279.59

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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.