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Finding the Fourth Proportional to 645.59, 967.85 and 609.36

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Solution

The fourth proportional to 645.59, 967.85 and 609.36 is: 913.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.59 : 967.85 = 609.36 : x
  2. Step 2: Convert to fraction form
    645.59/967.85 = 609.36/x
  3. Step 3: Cross multiply
    645.59x = 967.85 × 609.36
  4. Step 4: Simplify right side
    645.59x = 589,766.03
  5. Step 5: Solve for x
    x = 589,766.03/645.59
  6. Step 6: Final answer
    x = 913.54

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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.