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Finding the Fourth Proportional to 673.49, 1,002.45 and 658.37

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Solution

The fourth proportional to 673.49, 1,002.45 and 658.37 is: 979.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.49 : 1,002.45 = 658.37 : x
  2. Step 2: Convert to fraction form
    673.49/1,002.45 = 658.37/x
  3. Step 3: Cross multiply
    673.49x = 1,002.45 × 658.37
  4. Step 4: Simplify right side
    673.49x = 659,983.01
  5. Step 5: Solve for x
    x = 659,983.01/673.49
  6. Step 6: Final answer
    x = 979.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.