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Finding the Fourth Proportional to 262.69, 362.09 and 210.15

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Solution

The fourth proportional to 262.69, 362.09 and 210.15 is: 289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.69 : 362.09 = 210.15 : x
  2. Step 2: Convert to fraction form
    262.69/362.09 = 210.15/x
  3. Step 3: Cross multiply
    262.69x = 362.09 × 210.15
  4. Step 4: Simplify right side
    262.69x = 76,093.74
  5. Step 5: Solve for x
    x = 76,093.74/262.69
  6. Step 6: Final answer
    x = 289.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.