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Finding the Fourth Proportional to 867.12, 1,196.28 and 535.92

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Solution

The fourth proportional to 867.12, 1,196.28 and 535.92 is: 739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.12 : 1,196.28 = 535.92 : x
  2. Step 2: Convert to fraction form
    867.12/1,196.28 = 535.92/x
  3. Step 3: Cross multiply
    867.12x = 1,196.28 × 535.92
  4. Step 4: Simplify right side
    867.12x = 641,110.38
  5. Step 5: Solve for x
    x = 641,110.38/867.12
  6. Step 6: Final answer
    x = 739.36

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Double scale
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1.5x scale

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.