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Finding the Fourth Proportional to 1,214.85, 1,822.49 and 804.32

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Solution

The fourth proportional to 1,214.85, 1,822.49 and 804.32 is: 1,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.85 : 1,822.49 = 804.32 : x
  2. Step 2: Convert to fraction form
    1,214.85/1,822.49 = 804.32/x
  3. Step 3: Cross multiply
    1,214.85x = 1,822.49 × 804.32
  4. Step 4: Simplify right side
    1,214.85x = 1,465,861.14
  5. Step 5: Solve for x
    x = 1,465,861.14/1,214.85
  6. Step 6: Final answer
    x = 1,206.62

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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.