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Finding the Fourth Proportional to 1,368.14, 2,051.92 and 443.46

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Solution

The fourth proportional to 1,368.14, 2,051.92 and 443.46 is: 665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.14 : 2,051.92 = 443.46 : x
  2. Step 2: Convert to fraction form
    1,368.14/2,051.92 = 443.46/x
  3. Step 3: Cross multiply
    1,368.14x = 2,051.92 × 443.46
  4. Step 4: Simplify right side
    1,368.14x = 909,943.33
  5. Step 5: Solve for x
    x = 909,943.33/1,368.14
  6. Step 6: Final answer
    x = 665.10

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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.