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Finding the Fourth Proportional to 804.26, 1,205.44 and 341.76

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Solution

The fourth proportional to 804.26, 1,205.44 and 341.76 is: 512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.26 : 1,205.44 = 341.76 : x
  2. Step 2: Convert to fraction form
    804.26/1,205.44 = 341.76/x
  3. Step 3: Cross multiply
    804.26x = 1,205.44 × 341.76
  4. Step 4: Simplify right side
    804.26x = 411,971.17
  5. Step 5: Solve for x
    x = 411,971.17/804.26
  6. Step 6: Final answer
    x = 512.24

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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.