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Finding the Fourth Proportional to 867.17, 1,198.10 and 606.35

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Solution

The fourth proportional to 867.17, 1,198.10 and 606.35 is: 837.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.17 : 1,198.10 = 606.35 : x
  2. Step 2: Convert to fraction form
    867.17/1,198.10 = 606.35/x
  3. Step 3: Cross multiply
    867.17x = 1,198.10 × 606.35
  4. Step 4: Simplify right side
    867.17x = 726,472.45
  5. Step 5: Solve for x
    x = 726,472.45/867.17
  6. Step 6: Final answer
    x = 837.75

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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.