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Finding the Fourth Proportional to 804.62, 1,206.63 and 342.62

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Solution

The fourth proportional to 804.62, 1,206.63 and 342.62 is: 513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.62 : 1,206.63 = 342.62 : x
  2. Step 2: Convert to fraction form
    804.62/1,206.63 = 342.62/x
  3. Step 3: Cross multiply
    804.62x = 1,206.63 × 342.62
  4. Step 4: Simplify right side
    804.62x = 413,414.06
  5. Step 5: Solve for x
    x = 413,414.06/804.62
  6. Step 6: Final answer
    x = 513.80

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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.