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Finding the Fourth Proportional to 867.19, 1,196.28 and 587.33

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Solution

The fourth proportional to 867.19, 1,196.28 and 587.33 is: 810.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.19 : 1,196.28 = 587.33 : x
  2. Step 2: Convert to fraction form
    867.19/1,196.28 = 587.33/x
  3. Step 3: Cross multiply
    867.19x = 1,196.28 × 587.33
  4. Step 4: Simplify right side
    867.19x = 702,604.62
  5. Step 5: Solve for x
    x = 702,604.62/867.19
  6. Step 6: Final answer
    x = 810.21

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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.