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Finding the Fourth Proportional to 867.62, 1,196.04 and 572.38

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Solution

The fourth proportional to 867.62, 1,196.04 and 572.38 is: 789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.62 : 1,196.04 = 572.38 : x
  2. Step 2: Convert to fraction form
    867.62/1,196.04 = 572.38/x
  3. Step 3: Cross multiply
    867.62x = 1,196.04 × 572.38
  4. Step 4: Simplify right side
    867.62x = 684,588.53
  5. Step 5: Solve for x
    x = 684,588.53/867.62
  6. Step 6: Final answer
    x = 789.04

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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.