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Finding the Fourth Proportional to 967.34, 1,336.83 and 859.34

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Solution

The fourth proportional to 967.34, 1,336.83 and 859.34 is: 1,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.34 : 1,336.83 = 859.34 : x
  2. Step 2: Convert to fraction form
    967.34/1,336.83 = 859.34/x
  3. Step 3: Cross multiply
    967.34x = 1,336.83 × 859.34
  4. Step 4: Simplify right side
    967.34x = 1,148,791.49
  5. Step 5: Solve for x
    x = 1,148,791.49/967.34
  6. Step 6: Final answer
    x = 1,187.58

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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.