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Finding the Fourth Proportional to 645.04, 967.02 and 439.03

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Solution

The fourth proportional to 645.04, 967.02 and 439.03 is: 658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.04 : 967.02 = 439.03 : x
  2. Step 2: Convert to fraction form
    645.04/967.02 = 439.03/x
  3. Step 3: Cross multiply
    645.04x = 967.02 × 439.03
  4. Step 4: Simplify right side
    645.04x = 424,550.79
  5. Step 5: Solve for x
    x = 424,550.79/645.04
  6. Step 6: Final answer
    x = 658.18

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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.