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Finding the Fourth Proportional to 867.87, 1,302.02 and 251.62

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Solution

The fourth proportional to 867.87, 1,302.02 and 251.62 is: 377.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.87 : 1,302.02 = 251.62 : x
  2. Step 2: Convert to fraction form
    867.87/1,302.02 = 251.62/x
  3. Step 3: Cross multiply
    867.87x = 1,302.02 × 251.62
  4. Step 4: Simplify right side
    867.87x = 327,614.90
  5. Step 5: Solve for x
    x = 327,614.90/867.87
  6. Step 6: Final answer
    x = 377.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.