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Finding the Fourth Proportional to 263.79, 364.01 and 208.67

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Solution

The fourth proportional to 263.79, 364.01 and 208.67 is: 287.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.79 : 364.01 = 208.67 : x
  2. Step 2: Convert to fraction form
    263.79/364.01 = 208.67/x
  3. Step 3: Cross multiply
    263.79x = 364.01 × 208.67
  4. Step 4: Simplify right side
    263.79x = 75,955.10
  5. Step 5: Solve for x
    x = 75,955.10/263.79
  6. Step 6: Final answer
    x = 287.94

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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.