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Finding the Fourth Proportional to 1,367.17, 2,051.07 and 442.79

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Solution

The fourth proportional to 1,367.17, 2,051.07 and 442.79 is: 664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.17 : 2,051.07 = 442.79 : x
  2. Step 2: Convert to fraction form
    1,367.17/2,051.07 = 442.79/x
  3. Step 3: Cross multiply
    1,367.17x = 2,051.07 × 442.79
  4. Step 4: Simplify right side
    1,367.17x = 908,193.29
  5. Step 5: Solve for x
    x = 908,193.29/1,367.17
  6. Step 6: Final answer
    x = 664.29

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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.